Home / 91,705.29-126,575.78-55,915.02

Finding the Fourth Proportional to 91,705.29, 126,575.78 and 55,915.02

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Solution

The fourth proportional to 91,705.29, 126,575.78 and 55,915.02 is: 77,176.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,705.29 : 126,575.78 = 55,915.02 : x
  2. Step 2: Convert to fraction form
    91,705.29/126,575.78 = 55,915.02/x
  3. Step 3: Cross multiply
    91,705.29x = 126,575.78 × 55,915.02
  4. Step 4: Simplify right side
    91,705.29x = 7,077,487,270.22
  5. Step 5: Solve for x
    x = 7,077,487,270.22/91,705.29
  6. Step 6: Final answer
    x = 77,176.43

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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.