Home / 91,956.77-126,915.38-76,618.98

Finding the Fourth Proportional to 91,956.77, 126,915.38 and 76,618.98

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Solution

The fourth proportional to 91,956.77, 126,915.38 and 76,618.98 is: 105,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.77 : 126,915.38 = 76,618.98 : x
  2. Step 2: Convert to fraction form
    91,956.77/126,915.38 = 76,618.98/x
  3. Step 3: Cross multiply
    91,956.77x = 126,915.38 × 76,618.98
  4. Step 4: Simplify right side
    91,956.77x = 9,724,126,961.91
  5. Step 5: Solve for x
    x = 9,724,126,961.91/91,956.77
  6. Step 6: Final answer
    x = 105,746.72

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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.