Home / 65,374.40-90,236.39-56,517.05

Finding the Fourth Proportional to 65,374.40, 90,236.39 and 56,517.05

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Solution

The fourth proportional to 65,374.40, 90,236.39 and 56,517.05 is: 78,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,374.40 : 90,236.39 = 56,517.05 : x
  2. Step 2: Convert to fraction form
    65,374.40/90,236.39 = 56,517.05/x
  3. Step 3: Cross multiply
    65,374.40x = 90,236.39 × 56,517.05
  4. Step 4: Simplify right side
    65,374.40x = 5,099,894,508.46
  5. Step 5: Solve for x
    x = 5,099,894,508.46/65,374.40
  6. Step 6: Final answer
    x = 78,010.57

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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.