Home / 86,143.23-118,869.11-53,871.61

Finding the Fourth Proportional to 86,143.23, 118,869.11 and 53,871.61

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Solution

The fourth proportional to 86,143.23, 118,869.11 and 53,871.61 is: 74,337.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.23 : 118,869.11 = 53,871.61 : x
  2. Step 2: Convert to fraction form
    86,143.23/118,869.11 = 53,871.61/x
  3. Step 3: Cross multiply
    86,143.23x = 118,869.11 × 53,871.61
  4. Step 4: Simplify right side
    86,143.23x = 6,403,670,334.97
  5. Step 5: Solve for x
    x = 6,403,670,334.97/86,143.23
  6. Step 6: Final answer
    x = 74,337.48

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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.