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Finding the Fourth Proportional to 60,665.61, 90,998.64 and 18,545.54

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Solution

The fourth proportional to 60,665.61, 90,998.64 and 18,545.54 is: 27,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,665.61 : 90,998.64 = 18,545.54 : x
  2. Step 2: Convert to fraction form
    60,665.61/90,998.64 = 18,545.54/x
  3. Step 3: Cross multiply
    60,665.61x = 90,998.64 × 18,545.54
  4. Step 4: Simplify right side
    60,665.61x = 1,687,618,463.07
  5. Step 5: Solve for x
    x = 1,687,618,463.07/60,665.61
  6. Step 6: Final answer
    x = 27,818.37

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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.