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Finding the Fourth Proportional to 81,557.67, 112,771.59 and 71,060.07

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Solution

The fourth proportional to 81,557.67, 112,771.59 and 71,060.07 is: 98,256.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,557.67 : 112,771.59 = 71,060.07 : x
  2. Step 2: Convert to fraction form
    81,557.67/112,771.59 = 71,060.07/x
  3. Step 3: Cross multiply
    81,557.67x = 112,771.59 × 71,060.07
  4. Step 4: Simplify right side
    81,557.67x = 8,013,557,079.41
  5. Step 5: Solve for x
    x = 8,013,557,079.41/81,557.67
  6. Step 6: Final answer
    x = 98,256.33

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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.