Home / 56,980.20-85,470.30-38,317.80

Finding the Fourth Proportional to 56,980.20, 85,470.30 and 38,317.80

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Solution

The fourth proportional to 56,980.20, 85,470.30 and 38,317.80 is: 57,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,980.20 : 85,470.30 = 38,317.80 : x
  2. Step 2: Convert to fraction form
    56,980.20/85,470.30 = 38,317.80/x
  3. Step 3: Cross multiply
    56,980.20x = 85,470.30 × 38,317.80
  4. Step 4: Simplify right side
    56,980.20x = 3,275,033,861.34
  5. Step 5: Solve for x
    x = 3,275,033,861.34/56,980.20
  6. Step 6: Final answer
    x = 57,476.70

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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.