Home / 80,938.47-121,442.76-43,454.81

Finding the Fourth Proportional to 80,938.47, 121,442.76 and 43,454.81

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Solution

The fourth proportional to 80,938.47, 121,442.76 and 43,454.81 is: 65,201.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.47 : 121,442.76 = 43,454.81 : x
  2. Step 2: Convert to fraction form
    80,938.47/121,442.76 = 43,454.81/x
  3. Step 3: Cross multiply
    80,938.47x = 121,442.76 × 43,454.81
  4. Step 4: Simplify right side
    80,938.47x = 5,277,271,844.40
  5. Step 5: Solve for x
    x = 5,277,271,844.40/80,938.47
  6. Step 6: Final answer
    x = 65,201.03

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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.