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Finding the Fourth Proportional to 67,649.72, 93,366.52 and 38,963.87

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Solution

The fourth proportional to 67,649.72, 93,366.52 and 38,963.87 is: 53,775.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,649.72 : 93,366.52 = 38,963.87 : x
  2. Step 2: Convert to fraction form
    67,649.72/93,366.52 = 38,963.87/x
  3. Step 3: Cross multiply
    67,649.72x = 93,366.52 × 38,963.87
  4. Step 4: Simplify right side
    67,649.72x = 3,637,920,947.63
  5. Step 5: Solve for x
    x = 3,637,920,947.63/67,649.72
  6. Step 6: Final answer
    x = 53,775.85

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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.