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Finding the Fourth Proportional to 66,864.59, 100,421.80 and 58,862.19

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Solution

The fourth proportional to 66,864.59, 100,421.80 and 58,862.19 is: 88,403.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,864.59 : 100,421.80 = 58,862.19 : x
  2. Step 2: Convert to fraction form
    66,864.59/100,421.80 = 58,862.19/x
  3. Step 3: Cross multiply
    66,864.59x = 100,421.80 × 58,862.19
  4. Step 4: Simplify right side
    66,864.59x = 5,911,047,301.17
  5. Step 5: Solve for x
    x = 5,911,047,301.17/66,864.59
  6. Step 6: Final answer
    x = 88,403.26

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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.