Home / 81,558.67-112,772.97-71,061.07

Finding the Fourth Proportional to 81,558.67, 112,772.97 and 71,061.07

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Solution

The fourth proportional to 81,558.67, 112,772.97 and 71,061.07 is: 98,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.67 : 112,772.97 = 71,061.07 : x
  2. Step 2: Convert to fraction form
    81,558.67/112,772.97 = 71,061.07/x
  3. Step 3: Cross multiply
    81,558.67x = 112,772.97 × 71,061.07
  4. Step 4: Simplify right side
    81,558.67x = 8,013,767,915.28
  5. Step 5: Solve for x
    x = 8,013,767,915.28/81,558.67
  6. Step 6: Final answer
    x = 98,257.71

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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.