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Finding the Fourth Proportional to 92,880.68, 128,177.88 and 54,642.92

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Solution

The fourth proportional to 92,880.68, 128,177.88 and 54,642.92 is: 75,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,880.68 : 128,177.88 = 54,642.92 : x
  2. Step 2: Convert to fraction form
    92,880.68/128,177.88 = 54,642.92/x
  3. Step 3: Cross multiply
    92,880.68x = 128,177.88 × 54,642.92
  4. Step 4: Simplify right side
    92,880.68x = 7,004,013,642.61
  5. Step 5: Solve for x
    x = 7,004,013,642.61/92,880.68
  6. Step 6: Final answer
    x = 75,408.72

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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.