Home / 124,023.78-186,031.98-39,780.54

Finding the Fourth Proportional to 124,023.78, 186,031.98 and 39,780.54

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Solution

The fourth proportional to 124,023.78, 186,031.98 and 39,780.54 is: 59,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,023.78 : 186,031.98 = 39,780.54 : x
  2. Step 2: Convert to fraction form
    124,023.78/186,031.98 = 39,780.54/x
  3. Step 3: Cross multiply
    124,023.78x = 186,031.98 × 39,780.54
  4. Step 4: Simplify right side
    124,023.78x = 7,400,452,621.67
  5. Step 5: Solve for x
    x = 7,400,452,621.67/124,023.78
  6. Step 6: Final answer
    x = 59,669.63

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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.