Home / 74,765.20-103,178.28-42,940.48

Finding the Fourth Proportional to 74,765.20, 103,178.28 and 42,940.48

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Solution

The fourth proportional to 74,765.20, 103,178.28 and 42,940.48 is: 59,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,765.20 : 103,178.28 = 42,940.48 : x
  2. Step 2: Convert to fraction form
    74,765.20/103,178.28 = 42,940.48/x
  3. Step 3: Cross multiply
    74,765.20x = 103,178.28 × 42,940.48
  4. Step 4: Simplify right side
    74,765.20x = 4,430,524,868.77
  5. Step 5: Solve for x
    x = 4,430,524,868.77/74,765.20
  6. Step 6: Final answer
    x = 59,259.19

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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.