Home / 77,126.78-106,434.66-43,135.13

Finding the Fourth Proportional to 77,126.78, 106,434.66 and 43,135.13

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Solution

The fourth proportional to 77,126.78, 106,434.66 and 43,135.13 is: 59,526.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,126.78 : 106,434.66 = 43,135.13 : x
  2. Step 2: Convert to fraction form
    77,126.78/106,434.66 = 43,135.13/x
  3. Step 3: Cross multiply
    77,126.78x = 106,434.66 × 43,135.13
  4. Step 4: Simplify right side
    77,126.78x = 4,591,073,080.81
  5. Step 5: Solve for x
    x = 4,591,073,080.81/77,126.78
  6. Step 6: Final answer
    x = 59,526.31

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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.