Home / 48,387,920.80-72,581,881.20-12,486,128.80

Finding the Fourth Proportional to 48,387,920.80, 72,581,881.20 and 12,486,128.80

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Solution

The fourth proportional to 48,387,920.80, 72,581,881.20 and 12,486,128.80 is: 18,729,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,387,920.80 : 72,581,881.20 = 12,486,128.80 : x
  2. Step 2: Convert to fraction form
    48,387,920.80/72,581,881.20 = 12,486,128.80/x
  3. Step 3: Cross multiply
    48,387,920.80x = 72,581,881.20 × 12,486,128.80
  4. Step 4: Simplify right side
    48,387,920.80x = 906,266,717,209,498.62
  5. Step 5: Solve for x
    x = 906,266,717,209,498.62/48,387,920.80
  6. Step 6: Final answer
    x = 18,729,193.20

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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.