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Finding the Fourth Proportional to 66,607.64, 99,425.55 and 58,200

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Solution

The fourth proportional to 66,607.64, 99,425.55 and 58,200 is: 86,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607.64 : 99,425.55 = 58,200 : x
  2. Step 2: Convert to fraction form
    66,607.64/99,425.55 = 58,200/x
  3. Step 3: Cross multiply
    66,607.64x = 99,425.55 × 58,200
  4. Step 4: Simplify right side
    66,607.64x = 5,786,567,010
  5. Step 5: Solve for x
    x = 5,786,567,010/66,607.64
  6. Step 6: Final answer
    x = 86,875.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.