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Finding the Fourth Proportional to 65,866.78, 98,818.67 and 26,451.57

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Solution

The fourth proportional to 65,866.78, 98,818.67 and 26,451.57 is: 39,684.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,866.78 : 98,818.67 = 26,451.57 : x
  2. Step 2: Convert to fraction form
    65,866.78/98,818.67 = 26,451.57/x
  3. Step 3: Cross multiply
    65,866.78x = 98,818.67 × 26,451.57
  4. Step 4: Simplify right side
    65,866.78x = 2,613,908,966.81
  5. Step 5: Solve for x
    x = 2,613,908,966.81/65,866.78
  6. Step 6: Final answer
    x = 39,684.78

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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.