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Finding the Fourth Proportional to 91,915.39, 126,823.56 and 53,657.57

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Solution

The fourth proportional to 91,915.39, 126,823.56 and 53,657.57 is: 74,035.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,915.39 : 126,823.56 = 53,657.57 : x
  2. Step 2: Convert to fraction form
    91,915.39/126,823.56 = 53,657.57/x
  3. Step 3: Cross multiply
    91,915.39x = 126,823.56 × 53,657.57
  4. Step 4: Simplify right side
    91,915.39x = 6,805,044,103.69
  5. Step 5: Solve for x
    x = 6,805,044,103.69/91,915.39
  6. Step 6: Final answer
    x = 74,035.96

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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.