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Finding the Fourth Proportional to 87,314.67, 120,508.74 and 51,513.48

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Solution

The fourth proportional to 87,314.67, 120,508.74 and 51,513.48 is: 71,097.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,314.67 : 120,508.74 = 51,513.48 : x
  2. Step 2: Convert to fraction form
    87,314.67/120,508.74 = 51,513.48/x
  3. Step 3: Cross multiply
    87,314.67x = 120,508.74 × 51,513.48
  4. Step 4: Simplify right side
    87,314.67x = 6,207,824,567.82
  5. Step 5: Solve for x
    x = 6,207,824,567.82/87,314.67
  6. Step 6: Final answer
    x = 71,097.15

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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.