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Finding the Fourth Proportional to 87,503.72, 120,714.12 and 51,669.32

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Solution

The fourth proportional to 87,503.72, 120,714.12 and 51,669.32 is: 71,279.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,503.72 : 120,714.12 = 51,669.32 : x
  2. Step 2: Convert to fraction form
    87,503.72/120,714.12 = 51,669.32/x
  3. Step 3: Cross multiply
    87,503.72x = 120,714.12 × 51,669.32
  4. Step 4: Simplify right side
    87,503.72x = 6,237,216,494.80
  5. Step 5: Solve for x
    x = 6,237,216,494.80/87,503.72
  6. Step 6: Final answer
    x = 71,279.44

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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.