Home / 83,733.20-125,599.80-77,828.30

Finding the Fourth Proportional to 83,733.20, 125,599.80 and 77,828.30

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Solution

The fourth proportional to 83,733.20, 125,599.80 and 77,828.30 is: 116,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,733.20 : 125,599.80 = 77,828.30 : x
  2. Step 2: Convert to fraction form
    83,733.20/125,599.80 = 77,828.30/x
  3. Step 3: Cross multiply
    83,733.20x = 125,599.80 × 77,828.30
  4. Step 4: Simplify right side
    83,733.20x = 9,775,218,914.34
  5. Step 5: Solve for x
    x = 9,775,218,914.34/83,733.20
  6. Step 6: Final answer
    x = 116,742.45

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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.