Home / 84,781.76-127,200.39-34,885.36

Finding the Fourth Proportional to 84,781.76, 127,200.39 and 34,885.36

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Solution

The fourth proportional to 84,781.76, 127,200.39 and 34,885.36 is: 52,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,781.76 : 127,200.39 = 34,885.36 : x
  2. Step 2: Convert to fraction form
    84,781.76/127,200.39 = 34,885.36/x
  3. Step 3: Cross multiply
    84,781.76x = 127,200.39 × 34,885.36
  4. Step 4: Simplify right side
    84,781.76x = 4,437,430,586.86
  5. Step 5: Solve for x
    x = 4,437,430,586.86/84,781.76
  6. Step 6: Final answer
    x = 52,339.45

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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.