Home / 75,118.24-103,664.64-43,281.76

Finding the Fourth Proportional to 75,118.24, 103,664.64 and 43,281.76

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Solution

The fourth proportional to 75,118.24, 103,664.64 and 43,281.76 is: 59,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,118.24 : 103,664.64 = 43,281.76 : x
  2. Step 2: Convert to fraction form
    75,118.24/103,664.64 = 43,281.76/x
  3. Step 3: Cross multiply
    75,118.24x = 103,664.64 × 43,281.76
  4. Step 4: Simplify right side
    75,118.24x = 4,486,788,068.97
  5. Step 5: Solve for x
    x = 4,486,788,068.97/75,118.24
  6. Step 6: Final answer
    x = 59,729.68

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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.