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Finding the Fourth Proportional to 66,065.70, 99,123.63 and 28,652.04

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Solution

The fourth proportional to 66,065.70, 99,123.63 and 28,652.04 is: 42,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.70 : 99,123.63 = 28,652.04 : x
  2. Step 2: Convert to fraction form
    66,065.70/99,123.63 = 28,652.04/x
  3. Step 3: Cross multiply
    66,065.70x = 99,123.63 × 28,652.04
  4. Step 4: Simplify right side
    66,065.70x = 2,840,094,211.71
  5. Step 5: Solve for x
    x = 2,840,094,211.71/66,065.70
  6. Step 6: Final answer
    x = 42,988.94

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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.