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Finding the Fourth Proportional to 71,755.80, 99,058.88 and 55,587.12

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Solution

The fourth proportional to 71,755.80, 99,058.88 and 55,587.12 is: 76,738.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,755.80 : 99,058.88 = 55,587.12 : x
  2. Step 2: Convert to fraction form
    71,755.80/99,058.88 = 55,587.12/x
  3. Step 3: Cross multiply
    71,755.80x = 99,058.88 × 55,587.12
  4. Step 4: Simplify right side
    71,755.80x = 5,506,397,849.63
  5. Step 5: Solve for x
    x = 5,506,397,849.63/71,755.80
  6. Step 6: Final answer
    x = 76,738.02

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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.