Home / 65,891.20-98,836.80-39,582.40

Finding the Fourth Proportional to 65,891.20, 98,836.80 and 39,582.40

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Solution

The fourth proportional to 65,891.20, 98,836.80 and 39,582.40 is: 59,373.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,891.20 : 98,836.80 = 39,582.40 : x
  2. Step 2: Convert to fraction form
    65,891.20/98,836.80 = 39,582.40/x
  3. Step 3: Cross multiply
    65,891.20x = 98,836.80 × 39,582.40
  4. Step 4: Simplify right side
    65,891.20x = 3,912,197,752.32
  5. Step 5: Solve for x
    x = 3,912,197,752.32/65,891.20
  6. Step 6: Final answer
    x = 59,373.60

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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.