Home / 77,460.78-116,177.19-20,535.06

Finding the Fourth Proportional to 77,460.78, 116,177.19 and 20,535.06

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Solution

The fourth proportional to 77,460.78, 116,177.19 and 20,535.06 is: 30,798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,460.78 : 116,177.19 = 20,535.06 : x
  2. Step 2: Convert to fraction form
    77,460.78/116,177.19 = 20,535.06/x
  3. Step 3: Cross multiply
    77,460.78x = 116,177.19 × 20,535.06
  4. Step 4: Simplify right side
    77,460.78x = 2,385,705,567.28
  5. Step 5: Solve for x
    x = 2,385,705,567.28/77,460.78
  6. Step 6: Final answer
    x = 30,798.88

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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.