Home / 88,315.43-121,812.63-54,279.23

Finding the Fourth Proportional to 88,315.43, 121,812.63 and 54,279.23

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Solution

The fourth proportional to 88,315.43, 121,812.63 and 54,279.23 is: 74,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,315.43 : 121,812.63 = 54,279.23 : x
  2. Step 2: Convert to fraction form
    88,315.43/121,812.63 = 54,279.23/x
  3. Step 3: Cross multiply
    88,315.43x = 121,812.63 × 54,279.23
  4. Step 4: Simplify right side
    88,315.43x = 6,611,895,785.92
  5. Step 5: Solve for x
    x = 6,611,895,785.92/88,315.43
  6. Step 6: Final answer
    x = 74,866.82

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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.