Home / 78,938.88-118,405.08-19,773.24

Finding the Fourth Proportional to 78,938.88, 118,405.08 and 19,773.24

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Solution

The fourth proportional to 78,938.88, 118,405.08 and 19,773.24 is: 29,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.88 : 118,405.08 = 19,773.24 : x
  2. Step 2: Convert to fraction form
    78,938.88/118,405.08 = 19,773.24/x
  3. Step 3: Cross multiply
    78,938.88x = 118,405.08 × 19,773.24
  4. Step 4: Simplify right side
    78,938.88x = 2,341,252,064.06
  5. Step 5: Solve for x
    x = 2,341,252,064.06/78,938.88
  6. Step 6: Final answer
    x = 29,659.05

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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.