Home / 71,389.03-98,515.68-39,123.40

Finding the Fourth Proportional to 71,389.03, 98,515.68 and 39,123.40

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Solution

The fourth proportional to 71,389.03, 98,515.68 and 39,123.40 is: 53,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.03 : 98,515.68 = 39,123.40 : x
  2. Step 2: Convert to fraction form
    71,389.03/98,515.68 = 39,123.40/x
  3. Step 3: Cross multiply
    71,389.03x = 98,515.68 × 39,123.40
  4. Step 4: Simplify right side
    71,389.03x = 3,854,268,354.91
  5. Step 5: Solve for x
    x = 3,854,268,354.91/71,389.03
  6. Step 6: Final answer
    x = 53,989.64

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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.