Home / 91,638.16-126,460.62-55,828.13

Finding the Fourth Proportional to 91,638.16, 126,460.62 and 55,828.13

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Solution

The fourth proportional to 91,638.16, 126,460.62 and 55,828.13 is: 77,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,638.16 : 126,460.62 = 55,828.13 : x
  2. Step 2: Convert to fraction form
    91,638.16/126,460.62 = 55,828.13/x
  3. Step 3: Cross multiply
    91,638.16x = 126,460.62 × 55,828.13
  4. Step 4: Simplify right side
    91,638.16x = 7,060,059,300.94
  5. Step 5: Solve for x
    x = 7,060,059,300.94/91,638.16
  6. Step 6: Final answer
    x = 77,042.79

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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.