Home / 78,858,577,440.72-118,286,832,938.40-19,167,066,305.28

Finding the Fourth Proportional to 78,858,577,440.72, 118,286,832,938.40 and 19,167,066,305.28

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Solution

The fourth proportional to 78,858,577,440.72, 118,286,832,938.40 and 19,167,066,305.28 is: 28,750,348,326.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,858,577,440.72 : 118,286,832,938.40 = 19,167,066,305.28 : x
  2. Step 2: Convert to fraction form
    78,858,577,440.72/118,286,832,938.40 = 19,167,066,305.28/x
  3. Step 3: Cross multiply
    78,858,577,440.72x = 118,286,832,938.40 × 19,167,066,305.28
  4. Step 4: Simplify right side
    78,858,577,440.72x = 2,267,211,569,971,890,749,440
  5. Step 5: Solve for x
    x = 2,267,211,569,971,890,749,440/78,858,577,440.72
  6. Step 6: Final answer
    x = 28,750,348,326.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.