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Finding the Fourth Proportional to 72,545.76, 100,133.28 and 42,337.44

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Solution

The fourth proportional to 72,545.76, 100,133.28 and 42,337.44 is: 58,437.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,545.76 : 100,133.28 = 42,337.44 : x
  2. Step 2: Convert to fraction form
    72,545.76/100,133.28 = 42,337.44/x
  3. Step 3: Cross multiply
    72,545.76x = 100,133.28 × 42,337.44
  4. Step 4: Simplify right side
    72,545.76x = 4,239,386,734.00
  5. Step 5: Solve for x
    x = 4,239,386,734.00/72,545.76
  6. Step 6: Final answer
    x = 58,437.42

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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.