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Finding the Fourth Proportional to 87,495.58, 120,712.80 and 51,677.92

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Solution

The fourth proportional to 87,495.58, 120,712.80 and 51,677.92 is: 71,297.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,495.58 : 120,712.80 = 51,677.92 : x
  2. Step 2: Convert to fraction form
    87,495.58/120,712.80 = 51,677.92/x
  3. Step 3: Cross multiply
    87,495.58x = 120,712.80 × 51,677.92
  4. Step 4: Simplify right side
    87,495.58x = 6,238,186,421.38
  5. Step 5: Solve for x
    x = 6,238,186,421.38/87,495.58
  6. Step 6: Final answer
    x = 71,297.16

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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.