Home / 81,222.35-121,718.02-38,482.22

Finding the Fourth Proportional to 81,222.35, 121,718.02 and 38,482.22

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Solution

The fourth proportional to 81,222.35, 121,718.02 and 38,482.22 is: 57,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,222.35 : 121,718.02 = 38,482.22 : x
  2. Step 2: Convert to fraction form
    81,222.35/121,718.02 = 38,482.22/x
  3. Step 3: Cross multiply
    81,222.35x = 121,718.02 × 38,482.22
  4. Step 4: Simplify right side
    81,222.35x = 4,683,979,538.87
  5. Step 5: Solve for x
    x = 4,683,979,538.87/81,222.35
  6. Step 6: Final answer
    x = 57,668.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.