Home / 115,020.51-172,281.25-55,731.84

Finding the Fourth Proportional to 115,020.51, 172,281.25 and 55,731.84

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Solution

The fourth proportional to 115,020.51, 172,281.25 and 55,731.84 is: 83,476.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,020.51 : 172,281.25 = 55,731.84 : x
  2. Step 2: Convert to fraction form
    115,020.51/172,281.25 = 55,731.84/x
  3. Step 3: Cross multiply
    115,020.51x = 172,281.25 × 55,731.84
  4. Step 4: Simplify right side
    115,020.51x = 9,601,551,060
  5. Step 5: Solve for x
    x = 9,601,551,060/115,020.51
  6. Step 6: Final answer
    x = 83,476.86

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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.