Home / 42,780.75-63,857.78-37,730.65

Finding the Fourth Proportional to 42,780.75, 63,857.78 and 37,730.65

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Solution

The fourth proportional to 42,780.75, 63,857.78 and 37,730.65 is: 56,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,780.75 : 63,857.78 = 37,730.65 : x
  2. Step 2: Convert to fraction form
    42,780.75/63,857.78 = 37,730.65/x
  3. Step 3: Cross multiply
    42,780.75x = 63,857.78 × 37,730.65
  4. Step 4: Simplify right side
    42,780.75x = 2,409,395,546.96
  5. Step 5: Solve for x
    x = 2,409,395,546.96/42,780.75
  6. Step 6: Final answer
    x = 56,319.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.