Home / 40,139.40-60,218.70-19,345.80

Finding the Fourth Proportional to 40,139.40, 60,218.70 and 19,345.80

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Solution

The fourth proportional to 40,139.40, 60,218.70 and 19,345.80 is: 29,023.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.40 : 60,218.70 = 19,345.80 : x
  2. Step 2: Convert to fraction form
    40,139.40/60,218.70 = 19,345.80/x
  3. Step 3: Cross multiply
    40,139.40x = 60,218.70 × 19,345.80
  4. Step 4: Simplify right side
    40,139.40x = 1,164,978,926.46
  5. Step 5: Solve for x
    x = 1,164,978,926.46/40,139.40
  6. Step 6: Final answer
    x = 29,023.33

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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.