Home / 48,345.20-72,712.20-43,290.80

Finding the Fourth Proportional to 48,345.20, 72,712.20 and 43,290.80

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Solution

The fourth proportional to 48,345.20, 72,712.20 and 43,290.80 is: 65,110.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,345.20 : 72,712.20 = 43,290.80 : x
  2. Step 2: Convert to fraction form
    48,345.20/72,712.20 = 43,290.80/x
  3. Step 3: Cross multiply
    48,345.20x = 72,712.20 × 43,290.80
  4. Step 4: Simplify right side
    48,345.20x = 3,147,769,307.76
  5. Step 5: Solve for x
    x = 3,147,769,307.76/48,345.20
  6. Step 6: Final answer
    x = 65,110.28

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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.