Home / 115,280.70-172,945.35-48,686.55

Finding the Fourth Proportional to 115,280.70, 172,945.35 and 48,686.55

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Solution

The fourth proportional to 115,280.70, 172,945.35 and 48,686.55 is: 73,040.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,280.70 : 172,945.35 = 48,686.55 : x
  2. Step 2: Convert to fraction form
    115,280.70/172,945.35 = 48,686.55/x
  3. Step 3: Cross multiply
    115,280.70x = 172,945.35 × 48,686.55
  4. Step 4: Simplify right side
    115,280.70x = 8,420,112,430.04
  5. Step 5: Solve for x
    x = 8,420,112,430.04/115,280.70
  6. Step 6: Final answer
    x = 73,040.09

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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.