Home / 78,651,213.60-108,551,460-47,320,929.92

Finding the Fourth Proportional to 78,651,213.60, 108,551,460 and 47,320,929.92

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Solution

The fourth proportional to 78,651,213.60, 108,551,460 and 47,320,929.92 is: 65,310,575.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,651,213.60 : 108,551,460 = 47,320,929.92 : x
  2. Step 2: Convert to fraction form
    78,651,213.60/108,551,460 = 47,320,929.92/x
  3. Step 3: Cross multiply
    78,651,213.60x = 108,551,460 × 47,320,929.92
  4. Step 4: Simplify right side
    78,651,213.60x = 5,136,756,031,373,683
  5. Step 5: Solve for x
    x = 5,136,756,031,373,683/78,651,213.60
  6. Step 6: Final answer
    x = 65,310,575.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.