Home / 98,519.36-135,956.86-56,077.88

Finding the Fourth Proportional to 98,519.36, 135,956.86 and 56,077.88

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Solution

The fourth proportional to 98,519.36, 135,956.86 and 56,077.88 is: 77,387.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,519.36 : 135,956.86 = 56,077.88 : x
  2. Step 2: Convert to fraction form
    98,519.36/135,956.86 = 56,077.88/x
  3. Step 3: Cross multiply
    98,519.36x = 135,956.86 × 56,077.88
  4. Step 4: Simplify right side
    98,519.36x = 7,624,171,660.28
  5. Step 5: Solve for x
    x = 7,624,171,660.28/98,519.36
  6. Step 6: Final answer
    x = 77,387.55

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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.