Home / 77,147.97-106,455.11-43,158.21

Finding the Fourth Proportional to 77,147.97, 106,455.11 and 43,158.21

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Solution

The fourth proportional to 77,147.97, 106,455.11 and 43,158.21 is: 59,553.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.97 : 106,455.11 = 43,158.21 : x
  2. Step 2: Convert to fraction form
    77,147.97/106,455.11 = 43,158.21/x
  3. Step 3: Cross multiply
    77,147.97x = 106,455.11 × 43,158.21
  4. Step 4: Simplify right side
    77,147.97x = 4,594,411,777.16
  5. Step 5: Solve for x
    x = 4,594,411,777.16/77,147.97
  6. Step 6: Final answer
    x = 59,553.24

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1.5x scale

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.