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Finding the Fourth Proportional to 77,610.61, 107,111.52 and 43,158.78

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Solution

The fourth proportional to 77,610.61, 107,111.52 and 43,158.78 is: 59,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,610.61 : 107,111.52 = 43,158.78 : x
  2. Step 2: Convert to fraction form
    77,610.61/107,111.52 = 43,158.78/x
  3. Step 3: Cross multiply
    77,610.61x = 107,111.52 × 43,158.78
  4. Step 4: Simplify right side
    77,610.61x = 4,622,802,527.15
  5. Step 5: Solve for x
    x = 4,622,802,527.15/77,610.61
  6. Step 6: Final answer
    x = 59,564.05

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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.