Home / 48,621.20-72,931.80-15,789.20

Finding the Fourth Proportional to 48,621.20, 72,931.80 and 15,789.20

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Solution

The fourth proportional to 48,621.20, 72,931.80 and 15,789.20 is: 23,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,621.20 : 72,931.80 = 15,789.20 : x
  2. Step 2: Convert to fraction form
    48,621.20/72,931.80 = 15,789.20/x
  3. Step 3: Cross multiply
    48,621.20x = 72,931.80 × 15,789.20
  4. Step 4: Simplify right side
    48,621.20x = 1,151,534,776.56
  5. Step 5: Solve for x
    x = 1,151,534,776.56/48,621.20
  6. Step 6: Final answer
    x = 23,683.80

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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.