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Finding the Fourth Proportional to 86,569.60, 129,854.40 and 49,603.20

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Solution

The fourth proportional to 86,569.60, 129,854.40 and 49,603.20 is: 74,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.60 : 129,854.40 = 49,603.20 : x
  2. Step 2: Convert to fraction form
    86,569.60/129,854.40 = 49,603.20/x
  3. Step 3: Cross multiply
    86,569.60x = 129,854.40 × 49,603.20
  4. Step 4: Simplify right side
    86,569.60x = 6,441,193,774.08
  5. Step 5: Solve for x
    x = 6,441,193,774.08/86,569.60
  6. Step 6: Final answer
    x = 74,404.80

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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.