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Finding the Fourth Proportional to 48,138.68, 72,209.50 and 13,079.08

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Solution

The fourth proportional to 48,138.68, 72,209.50 and 13,079.08 is: 19,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,138.68 : 72,209.50 = 13,079.08 : x
  2. Step 2: Convert to fraction form
    48,138.68/72,209.50 = 13,079.08/x
  3. Step 3: Cross multiply
    48,138.68x = 72,209.50 × 13,079.08
  4. Step 4: Simplify right side
    48,138.68x = 944,433,827.26
  5. Step 5: Solve for x
    x = 944,433,827.26/48,138.68
  6. Step 6: Final answer
    x = 19,619.02

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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.