Home / 77,115.17-106,410.71-43,120.15

Finding the Fourth Proportional to 77,115.17, 106,410.71 and 43,120.15

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Solution

The fourth proportional to 77,115.17, 106,410.71 and 43,120.15 is: 59,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,115.17 : 106,410.71 = 43,120.15 : x
  2. Step 2: Convert to fraction form
    77,115.17/106,410.71 = 43,120.15/x
  3. Step 3: Cross multiply
    77,115.17x = 106,410.71 × 43,120.15
  4. Step 4: Simplify right side
    77,115.17x = 4,588,445,029.15
  5. Step 5: Solve for x
    x = 4,588,445,029.15/77,115.17
  6. Step 6: Final answer
    x = 59,501.20

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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.