Home / 81,364.26-112,187.02-65,218.66

Finding the Fourth Proportional to 81,364.26, 112,187.02 and 65,218.66

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Solution

The fourth proportional to 81,364.26, 112,187.02 and 65,218.66 is: 89,925.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,364.26 : 112,187.02 = 65,218.66 : x
  2. Step 2: Convert to fraction form
    81,364.26/112,187.02 = 65,218.66/x
  3. Step 3: Cross multiply
    81,364.26x = 112,187.02 × 65,218.66
  4. Step 4: Simplify right side
    81,364.26x = 7,316,687,113.79
  5. Step 5: Solve for x
    x = 7,316,687,113.79/81,364.26
  6. Step 6: Final answer
    x = 89,925.07

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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.