Home / 71,147.28-98,183.28-39,316.18

Finding the Fourth Proportional to 71,147.28, 98,183.28 and 39,316.18

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Solution

The fourth proportional to 71,147.28, 98,183.28 and 39,316.18 is: 54,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,147.28 : 98,183.28 = 39,316.18 : x
  2. Step 2: Convert to fraction form
    71,147.28/98,183.28 = 39,316.18/x
  3. Step 3: Cross multiply
    71,147.28x = 98,183.28 × 39,316.18
  4. Step 4: Simplify right side
    71,147.28x = 3,860,191,509.47
  5. Step 5: Solve for x
    x = 3,860,191,509.47/71,147.28
  6. Step 6: Final answer
    x = 54,256.35

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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.