Home / 84,747.60-127,121.40-51,532.80

Finding the Fourth Proportional to 84,747.60, 127,121.40 and 51,532.80

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Solution

The fourth proportional to 84,747.60, 127,121.40 and 51,532.80 is: 77,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,747.60 : 127,121.40 = 51,532.80 : x
  2. Step 2: Convert to fraction form
    84,747.60/127,121.40 = 51,532.80/x
  3. Step 3: Cross multiply
    84,747.60x = 127,121.40 × 51,532.80
  4. Step 4: Simplify right side
    84,747.60x = 6,550,921,681.92
  5. Step 5: Solve for x
    x = 6,550,921,681.92/84,747.60
  6. Step 6: Final answer
    x = 77,299.20

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1.5x scale

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.