Home / 51,965.40-77,948.10-51,187.80

Finding the Fourth Proportional to 51,965.40, 77,948.10 and 51,187.80

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Solution

The fourth proportional to 51,965.40, 77,948.10 and 51,187.80 is: 76,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,965.40 : 77,948.10 = 51,187.80 : x
  2. Step 2: Convert to fraction form
    51,965.40/77,948.10 = 51,187.80/x
  3. Step 3: Cross multiply
    51,965.40x = 77,948.10 × 51,187.80
  4. Step 4: Simplify right side
    51,965.40x = 3,989,991,753.18
  5. Step 5: Solve for x
    x = 3,989,991,753.18/51,965.40
  6. Step 6: Final answer
    x = 76,781.70

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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.