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Finding the Fourth Proportional to 60,460.81, 90,727.67 and 21,045.61

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Solution

The fourth proportional to 60,460.81, 90,727.67 and 21,045.61 is: 31,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,460.81 : 90,727.67 = 21,045.61 : x
  2. Step 2: Convert to fraction form
    60,460.81/90,727.67 = 21,045.61/x
  3. Step 3: Cross multiply
    60,460.81x = 90,727.67 × 21,045.61
  4. Step 4: Simplify right side
    60,460.81x = 1,909,419,159.03
  5. Step 5: Solve for x
    x = 1,909,419,159.03/60,460.81
  6. Step 6: Final answer
    x = 31,581.10

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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.