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Finding the Fourth Proportional to 65,280.57, 90,082.29 and 36,985.65

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Solution

The fourth proportional to 65,280.57, 90,082.29 and 36,985.65 is: 51,037.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,280.57 : 90,082.29 = 36,985.65 : x
  2. Step 2: Convert to fraction form
    65,280.57/90,082.29 = 36,985.65/x
  3. Step 3: Cross multiply
    65,280.57x = 90,082.29 × 36,985.65
  4. Step 4: Simplify right side
    65,280.57x = 3,331,752,049.14
  5. Step 5: Solve for x
    x = 3,331,752,049.14/65,280.57
  6. Step 6: Final answer
    x = 51,037.42

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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.