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Finding the Fourth Proportional to 66,433.29, 99,649.80 and 26,981.16

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Solution

The fourth proportional to 66,433.29, 99,649.80 and 26,981.16 is: 40,471.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433.29 : 99,649.80 = 26,981.16 : x
  2. Step 2: Convert to fraction form
    66,433.29/99,649.80 = 26,981.16/x
  3. Step 3: Cross multiply
    66,433.29x = 99,649.80 × 26,981.16
  4. Step 4: Simplify right side
    66,433.29x = 2,688,667,197.77
  5. Step 5: Solve for x
    x = 2,688,667,197.77/66,433.29
  6. Step 6: Final answer
    x = 40,471.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.