Home / 56,470.20-77,929.01-30,976.80

Finding the Fourth Proportional to 56,470.20, 77,929.01 and 30,976.80

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Solution

The fourth proportional to 56,470.20, 77,929.01 and 30,976.80 is: 42,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,470.20 : 77,929.01 = 30,976.80 : x
  2. Step 2: Convert to fraction form
    56,470.20/77,929.01 = 30,976.80/x
  3. Step 3: Cross multiply
    56,470.20x = 77,929.01 × 30,976.80
  4. Step 4: Simplify right side
    56,470.20x = 2,413,991,202.08
  5. Step 5: Solve for x
    x = 2,413,991,202.08/56,470.20
  6. Step 6: Final answer
    x = 42,748.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.