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Finding the Fourth Proportional to 60,436.93, 90,624.06 and 31,989.30

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Solution

The fourth proportional to 60,436.93, 90,624.06 and 31,989.30 is: 47,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,436.93 : 90,624.06 = 31,989.30 : x
  2. Step 2: Convert to fraction form
    60,436.93/90,624.06 = 31,989.30/x
  3. Step 3: Cross multiply
    60,436.93x = 90,624.06 × 31,989.30
  4. Step 4: Simplify right side
    60,436.93x = 2,899,000,242.56
  5. Step 5: Solve for x
    x = 2,899,000,242.56/60,436.93
  6. Step 6: Final answer
    x = 47,967.37

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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.