Home / 40,806.40-61,209.60-28,364.80

Finding the Fourth Proportional to 40,806.40, 61,209.60 and 28,364.80

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Solution

The fourth proportional to 40,806.40, 61,209.60 and 28,364.80 is: 42,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,806.40 : 61,209.60 = 28,364.80 : x
  2. Step 2: Convert to fraction form
    40,806.40/61,209.60 = 28,364.80/x
  3. Step 3: Cross multiply
    40,806.40x = 61,209.60 × 28,364.80
  4. Step 4: Simplify right side
    40,806.40x = 1,736,198,062.08
  5. Step 5: Solve for x
    x = 1,736,198,062.08/40,806.40
  6. Step 6: Final answer
    x = 42,547.20

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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.