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Finding the Fourth Proportional to 42,718.34, 58,892 and 36,812.90

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Solution

The fourth proportional to 42,718.34, 58,892 and 36,812.90 is: 50,750.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718.34 : 58,892 = 36,812.90 : x
  2. Step 2: Convert to fraction form
    42,718.34/58,892 = 36,812.90/x
  3. Step 3: Cross multiply
    42,718.34x = 58,892 × 36,812.90
  4. Step 4: Simplify right side
    42,718.34x = 2,167,985,306.80
  5. Step 5: Solve for x
    x = 2,167,985,306.80/42,718.34
  6. Step 6: Final answer
    x = 50,750.69

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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.