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Finding the Fourth Proportional to 66,437.70, 99,810.15 and 45,701.70

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Solution

The fourth proportional to 66,437.70, 99,810.15 and 45,701.70 is: 68,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,437.70 : 99,810.15 = 45,701.70 : x
  2. Step 2: Convert to fraction form
    66,437.70/99,810.15 = 45,701.70/x
  3. Step 3: Cross multiply
    66,437.70x = 99,810.15 × 45,701.70
  4. Step 4: Simplify right side
    66,437.70x = 4,561,493,532.26
  5. Step 5: Solve for x
    x = 4,561,493,532.26/66,437.70
  6. Step 6: Final answer
    x = 68,658.21

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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.