Home / 71,020.15-98,005.45-39,189.07

Finding the Fourth Proportional to 71,020.15, 98,005.45 and 39,189.07

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Solution

The fourth proportional to 71,020.15, 98,005.45 and 39,189.07 is: 54,079.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,020.15 : 98,005.45 = 39,189.07 : x
  2. Step 2: Convert to fraction form
    71,020.15/98,005.45 = 39,189.07/x
  3. Step 3: Cross multiply
    71,020.15x = 98,005.45 × 39,189.07
  4. Step 4: Simplify right side
    71,020.15x = 3,840,742,440.43
  5. Step 5: Solve for x
    x = 3,840,742,440.43/71,020.15
  6. Step 6: Final answer
    x = 54,079.62

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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.