Home / 71,218.04-98,279.21-39,386.25

Finding the Fourth Proportional to 71,218.04, 98,279.21 and 39,386.25

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Solution

The fourth proportional to 71,218.04, 98,279.21 and 39,386.25 is: 54,352.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.04 : 98,279.21 = 39,386.25 : x
  2. Step 2: Convert to fraction form
    71,218.04/98,279.21 = 39,386.25/x
  3. Step 3: Cross multiply
    71,218.04x = 98,279.21 × 39,386.25
  4. Step 4: Simplify right side
    71,218.04x = 3,870,849,337.93
  5. Step 5: Solve for x
    x = 3,870,849,337.93/71,218.04
  6. Step 6: Final answer
    x = 54,352.09

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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.