Home / 74,542.23-102,868.25-42,729.57

Finding the Fourth Proportional to 74,542.23, 102,868.25 and 42,729.57

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Solution

The fourth proportional to 74,542.23, 102,868.25 and 42,729.57 is: 58,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,542.23 : 102,868.25 = 42,729.57 : x
  2. Step 2: Convert to fraction form
    74,542.23/102,868.25 = 42,729.57/x
  3. Step 3: Cross multiply
    74,542.23x = 102,868.25 × 42,729.57
  4. Step 4: Simplify right side
    74,542.23x = 4,395,515,875.50
  5. Step 5: Solve for x
    x = 4,395,515,875.50/74,542.23
  6. Step 6: Final answer
    x = 58,966.79

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1.5x scale

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.