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Finding the Fourth Proportional to 91,304.64, 125,962.88 and 55,488.88

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Solution

The fourth proportional to 91,304.64, 125,962.88 and 55,488.88 is: 76,551.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.64 : 125,962.88 = 55,488.88 : x
  2. Step 2: Convert to fraction form
    91,304.64/125,962.88 = 55,488.88/x
  3. Step 3: Cross multiply
    91,304.64x = 125,962.88 × 55,488.88
  4. Step 4: Simplify right side
    91,304.64x = 6,989,539,132.77
  5. Step 5: Solve for x
    x = 6,989,539,132.77/91,304.64
  6. Step 6: Final answer
    x = 76,551.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.