Home / 115,017.12-172,568.51-51,818.28

Finding the Fourth Proportional to 115,017.12, 172,568.51 and 51,818.28

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Solution

The fourth proportional to 115,017.12, 172,568.51 and 51,818.28 is: 77,746.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,017.12 : 172,568.51 = 51,818.28 : x
  2. Step 2: Convert to fraction form
    115,017.12/172,568.51 = 51,818.28/x
  3. Step 3: Cross multiply
    115,017.12x = 172,568.51 × 51,818.28
  4. Step 4: Simplify right side
    115,017.12x = 8,942,203,111.27
  5. Step 5: Solve for x
    x = 8,942,203,111.27/115,017.12
  6. Step 6: Final answer
    x = 77,746.71

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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.