Home / 71,378.28-98,505.18-39,547.17

Finding the Fourth Proportional to 71,378.28, 98,505.18 and 39,547.17

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Solution

The fourth proportional to 71,378.28, 98,505.18 and 39,547.17 is: 54,576.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.28 : 98,505.18 = 39,547.17 : x
  2. Step 2: Convert to fraction form
    71,378.28/98,505.18 = 39,547.17/x
  3. Step 3: Cross multiply
    71,378.28x = 98,505.18 × 39,547.17
  4. Step 4: Simplify right side
    71,378.28x = 3,895,601,099.34
  5. Step 5: Solve for x
    x = 3,895,601,099.34/71,378.28
  6. Step 6: Final answer
    x = 54,576.84

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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.