Home / 98,412.48-135,807.98-55,391.76

Finding the Fourth Proportional to 98,412.48, 135,807.98 and 55,391.76

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Solution

The fourth proportional to 98,412.48, 135,807.98 and 55,391.76 is: 76,439.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,412.48 : 135,807.98 = 55,391.76 : x
  2. Step 2: Convert to fraction form
    98,412.48/135,807.98 = 55,391.76/x
  3. Step 3: Cross multiply
    98,412.48x = 135,807.98 × 55,391.76
  4. Step 4: Simplify right side
    98,412.48x = 7,522,642,757.29
  5. Step 5: Solve for x
    x = 7,522,642,757.29/98,412.48
  6. Step 6: Final answer
    x = 76,439.93

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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.