Home / 78,767.64-118,086.08-31,353.48

Finding the Fourth Proportional to 78,767.64, 118,086.08 and 31,353.48

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Solution

The fourth proportional to 78,767.64, 118,086.08 and 31,353.48 is: 47,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,767.64 : 118,086.08 = 31,353.48 : x
  2. Step 2: Convert to fraction form
    78,767.64/118,086.08 = 31,353.48/x
  3. Step 3: Cross multiply
    78,767.64x = 118,086.08 × 31,353.48
  4. Step 4: Simplify right side
    78,767.64x = 3,702,409,547.56
  5. Step 5: Solve for x
    x = 3,702,409,547.56/78,767.64
  6. Step 6: Final answer
    x = 47,004.20

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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.