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Finding the Fourth Proportional to 71,049.53, 106,590.96 and 21,130.04

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Solution

The fourth proportional to 71,049.53, 106,590.96 and 21,130.04 is: 31,700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,049.53 : 106,590.96 = 21,130.04 : x
  2. Step 2: Convert to fraction form
    71,049.53/106,590.96 = 21,130.04/x
  3. Step 3: Cross multiply
    71,049.53x = 106,590.96 × 21,130.04
  4. Step 4: Simplify right side
    71,049.53x = 2,252,270,715.48
  5. Step 5: Solve for x
    x = 2,252,270,715.48/71,049.53
  6. Step 6: Final answer
    x = 31,700.01

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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.