Home / 77,135.19-106,456.43-43,145.57

Finding the Fourth Proportional to 77,135.19, 106,456.43 and 43,145.57

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Solution

The fourth proportional to 77,135.19, 106,456.43 and 43,145.57 is: 59,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,135.19 : 106,456.43 = 43,145.57 : x
  2. Step 2: Convert to fraction form
    77,135.19/106,456.43 = 43,145.57/x
  3. Step 3: Cross multiply
    77,135.19x = 106,456.43 × 43,145.57
  4. Step 4: Simplify right side
    77,135.19x = 4,593,123,184.42
  5. Step 5: Solve for x
    x = 4,593,123,184.42/77,135.19
  6. Step 6: Final answer
    x = 59,546.40

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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.