Home / 57,060.19-78,742.60-31,909.69

Finding the Fourth Proportional to 57,060.19, 78,742.60 and 31,909.69

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Solution

The fourth proportional to 57,060.19, 78,742.60 and 31,909.69 is: 44,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,060.19 : 78,742.60 = 31,909.69 : x
  2. Step 2: Convert to fraction form
    57,060.19/78,742.60 = 31,909.69/x
  3. Step 3: Cross multiply
    57,060.19x = 78,742.60 × 31,909.69
  4. Step 4: Simplify right side
    57,060.19x = 2,512,651,955.79
  5. Step 5: Solve for x
    x = 2,512,651,955.79/57,060.19
  6. Step 6: Final answer
    x = 44,035.11

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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.