Home / 77,159.04-115,738.56-30,411.60

Finding the Fourth Proportional to 77,159.04, 115,738.56 and 30,411.60

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Solution

The fourth proportional to 77,159.04, 115,738.56 and 30,411.60 is: 45,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,159.04 : 115,738.56 = 30,411.60 : x
  2. Step 2: Convert to fraction form
    77,159.04/115,738.56 = 30,411.60/x
  3. Step 3: Cross multiply
    77,159.04x = 115,738.56 × 30,411.60
  4. Step 4: Simplify right side
    77,159.04x = 3,519,794,791.30
  5. Step 5: Solve for x
    x = 3,519,794,791.30/77,159.04
  6. Step 6: Final answer
    x = 45,617.40

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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.