Home / 48,008.80-72,013.20-20,306.80

Finding the Fourth Proportional to 48,008.80, 72,013.20 and 20,306.80

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Solution

The fourth proportional to 48,008.80, 72,013.20 and 20,306.80 is: 30,460.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,008.80 : 72,013.20 = 20,306.80 : x
  2. Step 2: Convert to fraction form
    48,008.80/72,013.20 = 20,306.80/x
  3. Step 3: Cross multiply
    48,008.80x = 72,013.20 × 20,306.80
  4. Step 4: Simplify right side
    48,008.80x = 1,462,357,649.76
  5. Step 5: Solve for x
    x = 1,462,357,649.76/48,008.80
  6. Step 6: Final answer
    x = 30,460.20

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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.