Home / 55,381.60-76,392.56-39,471.20

Finding the Fourth Proportional to 55,381.60, 76,392.56 and 39,471.20

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Solution

The fourth proportional to 55,381.60, 76,392.56 and 39,471.20 is: 54,445.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,381.60 : 76,392.56 = 39,471.20 : x
  2. Step 2: Convert to fraction form
    55,381.60/76,392.56 = 39,471.20/x
  3. Step 3: Cross multiply
    55,381.60x = 76,392.56 × 39,471.20
  4. Step 4: Simplify right side
    55,381.60x = 3,015,306,014.27
  5. Step 5: Solve for x
    x = 3,015,306,014.27/55,381.60
  6. Step 6: Final answer
    x = 54,445.99

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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.