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Finding the Fourth Proportional to 64,437.75, 88,963.02 and 42,120.63

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Solution

The fourth proportional to 64,437.75, 88,963.02 and 42,120.63 is: 58,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,437.75 : 88,963.02 = 42,120.63 : x
  2. Step 2: Convert to fraction form
    64,437.75/88,963.02 = 42,120.63/x
  3. Step 3: Cross multiply
    64,437.75x = 88,963.02 × 42,120.63
  4. Step 4: Simplify right side
    64,437.75x = 3,747,178,449.10
  5. Step 5: Solve for x
    x = 3,747,178,449.10/64,437.75
  6. Step 6: Final answer
    x = 58,151.91

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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.