Home / 77,120.24-106,412.02-43,129.40

Finding the Fourth Proportional to 77,120.24, 106,412.02 and 43,129.40

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Solution

The fourth proportional to 77,120.24, 106,412.02 and 43,129.40 is: 59,510.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.24 : 106,412.02 = 43,129.40 : x
  2. Step 2: Convert to fraction form
    77,120.24/106,412.02 = 43,129.40/x
  3. Step 3: Cross multiply
    77,120.24x = 106,412.02 × 43,129.40
  4. Step 4: Simplify right side
    77,120.24x = 4,589,486,575.39
  5. Step 5: Solve for x
    x = 4,589,486,575.39/77,120.24
  6. Step 6: Final answer
    x = 59,510.79

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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.