Home / 71,389.81-98,518.61-39,559.39

Finding the Fourth Proportional to 71,389.81, 98,518.61 and 39,559.39

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Solution

The fourth proportional to 71,389.81, 98,518.61 and 39,559.39 is: 54,592.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.81 : 98,518.61 = 39,559.39 : x
  2. Step 2: Convert to fraction form
    71,389.81/98,518.61 = 39,559.39/x
  3. Step 3: Cross multiply
    71,389.81x = 98,518.61 × 39,559.39
  4. Step 4: Simplify right side
    71,389.81x = 3,897,336,115.25
  5. Step 5: Solve for x
    x = 3,897,336,115.25/71,389.81
  6. Step 6: Final answer
    x = 54,592.33

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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.