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Finding the Fourth Proportional to 69,312.72, 95,651.95 and 38,687.20

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Solution

The fourth proportional to 69,312.72, 95,651.95 and 38,687.20 is: 53,388.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,312.72 : 95,651.95 = 38,687.20 : x
  2. Step 2: Convert to fraction form
    69,312.72/95,651.95 = 38,687.20/x
  3. Step 3: Cross multiply
    69,312.72x = 95,651.95 × 38,687.20
  4. Step 4: Simplify right side
    69,312.72x = 3,700,506,427.65
  5. Step 5: Solve for x
    x = 3,700,506,427.65/69,312.72
  6. Step 6: Final answer
    x = 53,388.56

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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.