Home / 89,628.80-134,335.20-52,116.80

Finding the Fourth Proportional to 89,628.80, 134,335.20 and 52,116.80

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Solution

The fourth proportional to 89,628.80, 134,335.20 and 52,116.80 is: 78,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,628.80 : 134,335.20 = 52,116.80 : x
  2. Step 2: Convert to fraction form
    89,628.80/134,335.20 = 52,116.80/x
  3. Step 3: Cross multiply
    89,628.80x = 134,335.20 × 52,116.80
  4. Step 4: Simplify right side
    89,628.80x = 7,001,120,751.36
  5. Step 5: Solve for x
    x = 7,001,120,751.36/89,628.80
  6. Step 6: Final answer
    x = 78,112.40

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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.