Home / 71,128.04-98,158.68-39,299.00

Finding the Fourth Proportional to 71,128.04, 98,158.68 and 39,299.00

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Solution

The fourth proportional to 71,128.04, 98,158.68 and 39,299.00 is: 54,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,128.04 : 98,158.68 = 39,299.00 : x
  2. Step 2: Convert to fraction form
    71,128.04/98,158.68 = 39,299.00/x
  3. Step 3: Cross multiply
    71,128.04x = 98,158.68 × 39,299.00
  4. Step 4: Simplify right side
    71,128.04x = 3,857,537,474.53
  5. Step 5: Solve for x
    x = 3,857,537,474.53/71,128.04
  6. Step 6: Final answer
    x = 54,233.71

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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.