Home / 91,931.76-126,862.34-51,098.45

Finding the Fourth Proportional to 91,931.76, 126,862.34 and 51,098.45

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Solution

The fourth proportional to 91,931.76, 126,862.34 and 51,098.45 is: 70,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,931.76 : 126,862.34 = 51,098.45 : x
  2. Step 2: Convert to fraction form
    91,931.76/126,862.34 = 51,098.45/x
  3. Step 3: Cross multiply
    91,931.76x = 126,862.34 × 51,098.45
  4. Step 4: Simplify right side
    91,931.76x = 6,482,468,047.57
  5. Step 5: Solve for x
    x = 6,482,468,047.57/91,931.76
  6. Step 6: Final answer
    x = 70,513.91

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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.