Home / 74,070.13-111,105.19-18,666.13

Finding the Fourth Proportional to 74,070.13, 111,105.19 and 18,666.13

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Solution

The fourth proportional to 74,070.13, 111,105.19 and 18,666.13 is: 27,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,070.13 : 111,105.19 = 18,666.13 : x
  2. Step 2: Convert to fraction form
    74,070.13/111,105.19 = 18,666.13/x
  3. Step 3: Cross multiply
    74,070.13x = 111,105.19 × 18,666.13
  4. Step 4: Simplify right side
    74,070.13x = 2,073,903,920.21
  5. Step 5: Solve for x
    x = 2,073,903,920.21/74,070.13
  6. Step 6: Final answer
    x = 27,999.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.