Home / 78,256,274.59-117,407,130.85-31,545,654.35

Finding the Fourth Proportional to 78,256,274.59, 117,407,130.85 and 31,545,654.35

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Solution

The fourth proportional to 78,256,274.59, 117,407,130.85 and 31,545,654.35 is: 47,327,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,256,274.59 : 117,407,130.85 = 31,545,654.35 : x
  2. Step 2: Convert to fraction form
    78,256,274.59/117,407,130.85 = 31,545,654.35/x
  3. Step 3: Cross multiply
    78,256,274.59x = 117,407,130.85 × 31,545,654.35
  4. Step 4: Simplify right side
    78,256,274.59x = 3,703,684,767,977,959
  5. Step 5: Solve for x
    x = 3,703,684,767,977,959/78,256,274.59
  6. Step 6: Final answer
    x = 47,327,639.70

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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.