Home / 77,270.64-115,905.96-42,191.16

Finding the Fourth Proportional to 77,270.64, 115,905.96 and 42,191.16

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Solution

The fourth proportional to 77,270.64, 115,905.96 and 42,191.16 is: 63,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,270.64 : 115,905.96 = 42,191.16 : x
  2. Step 2: Convert to fraction form
    77,270.64/115,905.96 = 42,191.16/x
  3. Step 3: Cross multiply
    77,270.64x = 115,905.96 × 42,191.16
  4. Step 4: Simplify right side
    77,270.64x = 4,890,206,903.31
  5. Step 5: Solve for x
    x = 4,890,206,903.31/77,270.64
  6. Step 6: Final answer
    x = 63,286.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.