Home / 39,139.89-58,636.02-30,331.75

Finding the Fourth Proportional to 39,139.89, 58,636.02 and 30,331.75

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Solution

The fourth proportional to 39,139.89, 58,636.02 and 30,331.75 is: 45,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.89 : 58,636.02 = 30,331.75 : x
  2. Step 2: Convert to fraction form
    39,139.89/58,636.02 = 30,331.75/x
  3. Step 3: Cross multiply
    39,139.89x = 58,636.02 × 30,331.75
  4. Step 4: Simplify right side
    39,139.89x = 1,778,532,953.04
  5. Step 5: Solve for x
    x = 1,778,532,953.04/39,139.89
  6. Step 6: Final answer
    x = 45,440.42

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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.