Home / 78,136.40-117,151.24-37,588.52

Finding the Fourth Proportional to 78,136.40, 117,151.24 and 37,588.52

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Solution

The fourth proportional to 78,136.40, 117,151.24 and 37,588.52 is: 56,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,136.40 : 117,151.24 = 37,588.52 : x
  2. Step 2: Convert to fraction form
    78,136.40/117,151.24 = 37,588.52/x
  3. Step 3: Cross multiply
    78,136.40x = 117,151.24 × 37,588.52
  4. Step 4: Simplify right side
    78,136.40x = 4,403,541,727.76
  5. Step 5: Solve for x
    x = 4,403,541,727.76/78,136.40
  6. Step 6: Final answer
    x = 56,357.11

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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.