Home / 90,915.53-125,542.75-56,982.35

Finding the Fourth Proportional to 90,915.53, 125,542.75 and 56,982.35

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Solution

The fourth proportional to 90,915.53, 125,542.75 and 56,982.35 is: 78,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,915.53 : 125,542.75 = 56,982.35 : x
  2. Step 2: Convert to fraction form
    90,915.53/125,542.75 = 56,982.35/x
  3. Step 3: Cross multiply
    90,915.53x = 125,542.75 × 56,982.35
  4. Step 4: Simplify right side
    90,915.53x = 7,153,720,920.46
  5. Step 5: Solve for x
    x = 7,153,720,920.46/90,915.53
  6. Step 6: Final answer
    x = 78,685.36

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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.