Home / 69,871.18-105,277.56-57,664.61

Finding the Fourth Proportional to 69,871.18, 105,277.56 and 57,664.61

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Solution

The fourth proportional to 69,871.18, 105,277.56 and 57,664.61 is: 86,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,871.18 : 105,277.56 = 57,664.61 : x
  2. Step 2: Convert to fraction form
    69,871.18/105,277.56 = 57,664.61/x
  3. Step 3: Cross multiply
    69,871.18x = 105,277.56 × 57,664.61
  4. Step 4: Simplify right side
    69,871.18x = 6,070,789,150.83
  5. Step 5: Solve for x
    x = 6,070,789,150.83/69,871.18
  6. Step 6: Final answer
    x = 86,885.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.