Home / 85,275.91-117,690.78-48,990.34

Finding the Fourth Proportional to 85,275.91, 117,690.78 and 48,990.34

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Solution

The fourth proportional to 85,275.91, 117,690.78 and 48,990.34 is: 67,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,275.91 : 117,690.78 = 48,990.34 : x
  2. Step 2: Convert to fraction form
    85,275.91/117,690.78 = 48,990.34/x
  3. Step 3: Cross multiply
    85,275.91x = 117,690.78 × 48,990.34
  4. Step 4: Simplify right side
    85,275.91x = 5,765,711,327.07
  5. Step 5: Solve for x
    x = 5,765,711,327.07/85,275.91
  6. Step 6: Final answer
    x = 67,612.43

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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.