Home / 77,640.42-107,143.14-43,649.06

Finding the Fourth Proportional to 77,640.42, 107,143.14 and 43,649.06

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Solution

The fourth proportional to 77,640.42, 107,143.14 and 43,649.06 is: 60,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,640.42 : 107,143.14 = 43,649.06 : x
  2. Step 2: Convert to fraction form
    77,640.42/107,143.14 = 43,649.06/x
  3. Step 3: Cross multiply
    77,640.42x = 107,143.14 × 43,649.06
  4. Step 4: Simplify right side
    77,640.42x = 4,676,697,331.57
  5. Step 5: Solve for x
    x = 4,676,697,331.57/77,640.42
  6. Step 6: Final answer
    x = 60,235.34

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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.