Home / 78,666.48-118,037.79-39,229.20

Finding the Fourth Proportional to 78,666.48, 118,037.79 and 39,229.20

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Solution

The fourth proportional to 78,666.48, 118,037.79 and 39,229.20 is: 58,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666.48 : 118,037.79 = 39,229.20 : x
  2. Step 2: Convert to fraction form
    78,666.48/118,037.79 = 39,229.20/x
  3. Step 3: Cross multiply
    78,666.48x = 118,037.79 × 39,229.20
  4. Step 4: Simplify right side
    78,666.48x = 4,630,528,071.47
  5. Step 5: Solve for x
    x = 4,630,528,071.47/78,666.48
  6. Step 6: Final answer
    x = 58,862.78

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1.5x scale

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.