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Finding the Fourth Proportional to 48,658.79, 72,990.78 and 15,376.32

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Solution

The fourth proportional to 48,658.79, 72,990.78 and 15,376.32 is: 23,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,658.79 : 72,990.78 = 15,376.32 : x
  2. Step 2: Convert to fraction form
    48,658.79/72,990.78 = 15,376.32/x
  3. Step 3: Cross multiply
    48,658.79x = 72,990.78 × 15,376.32
  4. Step 4: Simplify right side
    48,658.79x = 1,122,329,538.14
  5. Step 5: Solve for x
    x = 1,122,329,538.14/48,658.79
  6. Step 6: Final answer
    x = 23,065.30

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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.