Home / 84,823.60-127,235.40-70,049.20

Finding the Fourth Proportional to 84,823.60, 127,235.40 and 70,049.20

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Solution

The fourth proportional to 84,823.60, 127,235.40 and 70,049.20 is: 105,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,823.60 : 127,235.40 = 70,049.20 : x
  2. Step 2: Convert to fraction form
    84,823.60/127,235.40 = 70,049.20/x
  3. Step 3: Cross multiply
    84,823.60x = 127,235.40 × 70,049.20
  4. Step 4: Simplify right side
    84,823.60x = 8,912,737,981.68
  5. Step 5: Solve for x
    x = 8,912,737,981.68/84,823.60
  6. Step 6: Final answer
    x = 105,073.80

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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.