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Finding the Fourth Proportional to 72,082.17, 99,447.01 and 45,214.88

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Solution

The fourth proportional to 72,082.17, 99,447.01 and 45,214.88 is: 62,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,082.17 : 99,447.01 = 45,214.88 : x
  2. Step 2: Convert to fraction form
    72,082.17/99,447.01 = 45,214.88/x
  3. Step 3: Cross multiply
    72,082.17x = 99,447.01 × 45,214.88
  4. Step 4: Simplify right side
    72,082.17x = 4,496,484,013.24
  5. Step 5: Solve for x
    x = 4,496,484,013.24/72,082.17
  6. Step 6: Final answer
    x = 62,379.98

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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.