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Finding the Fourth Proportional to 48,127.60, 72,191.40 and 30,412.90

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Solution

The fourth proportional to 48,127.60, 72,191.40 and 30,412.90 is: 45,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,127.60 : 72,191.40 = 30,412.90 : x
  2. Step 2: Convert to fraction form
    48,127.60/72,191.40 = 30,412.90/x
  3. Step 3: Cross multiply
    48,127.60x = 72,191.40 × 30,412.90
  4. Step 4: Simplify right side
    48,127.60x = 2,195,549,829.06
  5. Step 5: Solve for x
    x = 2,195,549,829.06/48,127.60
  6. Step 6: Final answer
    x = 45,619.35

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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.