Home / 74,568.77-102,909.33-42,739.72

Finding the Fourth Proportional to 74,568.77, 102,909.33 and 42,739.72

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Solution

The fourth proportional to 74,568.77, 102,909.33 and 42,739.72 is: 58,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,568.77 : 102,909.33 = 42,739.72 : x
  2. Step 2: Convert to fraction form
    74,568.77/102,909.33 = 42,739.72/x
  3. Step 3: Cross multiply
    74,568.77x = 102,909.33 × 42,739.72
  4. Step 4: Simplify right side
    74,568.77x = 4,398,315,949.59
  5. Step 5: Solve for x
    x = 4,398,315,949.59/74,568.77
  6. Step 6: Final answer
    x = 58,983.35

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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.