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Finding the Fourth Proportional to 59,999.31, 90,011.70 and 20,545.83

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Solution

The fourth proportional to 59,999.31, 90,011.70 and 20,545.83 is: 30,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,999.31 : 90,011.70 = 20,545.83 : x
  2. Step 2: Convert to fraction form
    59,999.31/90,011.70 = 20,545.83/x
  3. Step 3: Cross multiply
    59,999.31x = 90,011.70 × 20,545.83
  4. Step 4: Simplify right side
    59,999.31x = 1,849,365,086.21
  5. Step 5: Solve for x
    x = 1,849,365,086.21/59,999.31
  6. Step 6: Final answer
    x = 30,823.11

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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.