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Finding the Fourth Proportional to 66,157.68, 99,239.76 and 26,709.87

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Solution

The fourth proportional to 66,157.68, 99,239.76 and 26,709.87 is: 40,066.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.68 : 99,239.76 = 26,709.87 : x
  2. Step 2: Convert to fraction form
    66,157.68/99,239.76 = 26,709.87/x
  3. Step 3: Cross multiply
    66,157.68x = 99,239.76 × 26,709.87
  4. Step 4: Simplify right side
    66,157.68x = 2,650,681,088.43
  5. Step 5: Solve for x
    x = 2,650,681,088.43/66,157.68
  6. Step 6: Final answer
    x = 40,066.11

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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.