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Finding the Fourth Proportional to 52,422.65, 78,449.30 and 42,948.89

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Solution

The fourth proportional to 52,422.65, 78,449.30 and 42,948.89 is: 64,272.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,422.65 : 78,449.30 = 42,948.89 : x
  2. Step 2: Convert to fraction form
    52,422.65/78,449.30 = 42,948.89/x
  3. Step 3: Cross multiply
    52,422.65x = 78,449.30 × 42,948.89
  4. Step 4: Simplify right side
    52,422.65x = 3,369,310,141.53
  5. Step 5: Solve for x
    x = 3,369,310,141.53/52,422.65
  6. Step 6: Final answer
    x = 64,272.03

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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.