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Finding the Fourth Proportional to 66,457.55, 99,631.18 and 26,451.86

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Solution

The fourth proportional to 66,457.55, 99,631.18 and 26,451.86 is: 39,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.55 : 99,631.18 = 26,451.86 : x
  2. Step 2: Convert to fraction form
    66,457.55/99,631.18 = 26,451.86/x
  3. Step 3: Cross multiply
    66,457.55x = 99,631.18 × 26,451.86
  4. Step 4: Simplify right side
    66,457.55x = 2,635,429,460.71
  5. Step 5: Solve for x
    x = 2,635,429,460.71/66,457.55
  6. Step 6: Final answer
    x = 39,655.83

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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.