Home / 74,780.11-103,234.64-57,746.11

Finding the Fourth Proportional to 74,780.11, 103,234.64 and 57,746.11

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Solution

The fourth proportional to 74,780.11, 103,234.64 and 57,746.11 is: 79,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,780.11 : 103,234.64 = 57,746.11 : x
  2. Step 2: Convert to fraction form
    74,780.11/103,234.64 = 57,746.11/x
  3. Step 3: Cross multiply
    74,780.11x = 103,234.64 × 57,746.11
  4. Step 4: Simplify right side
    74,780.11x = 5,961,399,295.74
  5. Step 5: Solve for x
    x = 5,961,399,295.74/74,780.11
  6. Step 6: Final answer
    x = 79,719.05

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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.