Home / 88,030.80-121,500-57,821.04

Finding the Fourth Proportional to 88,030.80, 121,500 and 57,821.04

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Solution

The fourth proportional to 88,030.80, 121,500 and 57,821.04 is: 79,804.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,030.80 : 121,500 = 57,821.04 : x
  2. Step 2: Convert to fraction form
    88,030.80/121,500 = 57,821.04/x
  3. Step 3: Cross multiply
    88,030.80x = 121,500 × 57,821.04
  4. Step 4: Simplify right side
    88,030.80x = 7,025,256,360
  5. Step 5: Solve for x
    x = 7,025,256,360/88,030.80
  6. Step 6: Final answer
    x = 79,804.53

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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.