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Finding the Fourth Proportional to 57,079.80, 85,619.70 and 15,526.80

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Solution

The fourth proportional to 57,079.80, 85,619.70 and 15,526.80 is: 23,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,079.80 : 85,619.70 = 15,526.80 : x
  2. Step 2: Convert to fraction form
    57,079.80/85,619.70 = 15,526.80/x
  3. Step 3: Cross multiply
    57,079.80x = 85,619.70 × 15,526.80
  4. Step 4: Simplify right side
    57,079.80x = 1,329,399,957.96
  5. Step 5: Solve for x
    x = 1,329,399,957.96/57,079.80
  6. Step 6: Final answer
    x = 23,290.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.