Home / 91,211.68-125,874.24-57,221.60

Finding the Fourth Proportional to 91,211.68, 125,874.24 and 57,221.60

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Solution

The fourth proportional to 91,211.68, 125,874.24 and 57,221.60 is: 78,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,211.68 : 125,874.24 = 57,221.60 : x
  2. Step 2: Convert to fraction form
    91,211.68/125,874.24 = 57,221.60/x
  3. Step 3: Cross multiply
    91,211.68x = 125,874.24 × 57,221.60
  4. Step 4: Simplify right side
    91,211.68x = 7,202,725,411.58
  5. Step 5: Solve for x
    x = 7,202,725,411.58/91,211.68
  6. Step 6: Final answer
    x = 78,967.14

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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.