Home / 57,132.80-78,845.76-31,981.76

Finding the Fourth Proportional to 57,132.80, 78,845.76 and 31,981.76

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Solution

The fourth proportional to 57,132.80, 78,845.76 and 31,981.76 is: 44,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,132.80 : 78,845.76 = 31,981.76 : x
  2. Step 2: Convert to fraction form
    57,132.80/78,845.76 = 31,981.76/x
  3. Step 3: Cross multiply
    57,132.80x = 78,845.76 × 31,981.76
  4. Step 4: Simplify right side
    57,132.80x = 2,521,626,173.34
  5. Step 5: Solve for x
    x = 2,521,626,173.34/57,132.80
  6. Step 6: Final answer
    x = 44,136.23

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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.