Home / 71,605.48-98,818.68-39,777.36

Finding the Fourth Proportional to 71,605.48, 98,818.68 and 39,777.36

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Solution

The fourth proportional to 71,605.48, 98,818.68 and 39,777.36 is: 54,894.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,605.48 : 98,818.68 = 39,777.36 : x
  2. Step 2: Convert to fraction form
    71,605.48/98,818.68 = 39,777.36/x
  3. Step 3: Cross multiply
    71,605.48x = 98,818.68 × 39,777.36
  4. Step 4: Simplify right side
    71,605.48x = 3,930,746,209.08
  5. Step 5: Solve for x
    x = 3,930,746,209.08/71,605.48
  6. Step 6: Final answer
    x = 54,894.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.