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Finding the Fourth Proportional to 69,957.60, 96,543.53 and 38,128.56

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Solution

The fourth proportional to 69,957.60, 96,543.53 and 38,128.56 is: 52,618.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,957.60 : 96,543.53 = 38,128.56 : x
  2. Step 2: Convert to fraction form
    69,957.60/96,543.53 = 38,128.56/x
  3. Step 3: Cross multiply
    69,957.60x = 96,543.53 × 38,128.56
  4. Step 4: Simplify right side
    69,957.60x = 3,681,065,776.22
  5. Step 5: Solve for x
    x = 3,681,065,776.22/69,957.60
  6. Step 6: Final answer
    x = 52,618.53

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1.5x scale

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.