Home / 75,108.40-103,660.98-42,842.86

Finding the Fourth Proportional to 75,108.40, 103,660.98 and 42,842.86

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Solution

The fourth proportional to 75,108.40, 103,660.98 and 42,842.86 is: 59,129.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,108.40 : 103,660.98 = 42,842.86 : x
  2. Step 2: Convert to fraction form
    75,108.40/103,660.98 = 42,842.86/x
  3. Step 3: Cross multiply
    75,108.40x = 103,660.98 × 42,842.86
  4. Step 4: Simplify right side
    75,108.40x = 4,441,132,853.60
  5. Step 5: Solve for x
    x = 4,441,132,853.60/75,108.40
  6. Step 6: Final answer
    x = 59,129.64

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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.