Home / 91,965.28-126,915.84-51,678.92

Finding the Fourth Proportional to 91,965.28, 126,915.84 and 51,678.92

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Solution

The fourth proportional to 91,965.28, 126,915.84 and 51,678.92 is: 71,319.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,965.28 : 126,915.84 = 51,678.92 : x
  2. Step 2: Convert to fraction form
    91,965.28/126,915.84 = 51,678.92/x
  3. Step 3: Cross multiply
    91,965.28x = 126,915.84 × 51,678.92
  4. Step 4: Simplify right side
    91,965.28x = 6,558,872,649.12
  5. Step 5: Solve for x
    x = 6,558,872,649.12/91,965.28
  6. Step 6: Final answer
    x = 71,319.01

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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.