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Finding the Fourth Proportional to 72,539.52, 108,597.96 and 53,902.20

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Solution

The fourth proportional to 72,539.52, 108,597.96 and 53,902.20 is: 80,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.52 : 108,597.96 = 53,902.20 : x
  2. Step 2: Convert to fraction form
    72,539.52/108,597.96 = 53,902.20/x
  3. Step 3: Cross multiply
    72,539.52x = 108,597.96 × 53,902.20
  4. Step 4: Simplify right side
    72,539.52x = 5,853,668,959.51
  5. Step 5: Solve for x
    x = 5,853,668,959.51/72,539.52
  6. Step 6: Final answer
    x = 80,696.27

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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.