Home / 80,937.66-111,781.08-61,611.24

Finding the Fourth Proportional to 80,937.66, 111,781.08 and 61,611.24

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Solution

The fourth proportional to 80,937.66, 111,781.08 and 61,611.24 is: 85,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.66 : 111,781.08 = 61,611.24 : x
  2. Step 2: Convert to fraction form
    80,937.66/111,781.08 = 61,611.24/x
  3. Step 3: Cross multiply
    80,937.66x = 111,781.08 × 61,611.24
  4. Step 4: Simplify right side
    80,937.66x = 6,886,970,947.34
  5. Step 5: Solve for x
    x = 6,886,970,947.34/80,937.66
  6. Step 6: Final answer
    x = 85,089.82

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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.