Home / 90,534.48-135,245.28-65,359.68

Finding the Fourth Proportional to 90,534.48, 135,245.28 and 65,359.68

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Solution

The fourth proportional to 90,534.48, 135,245.28 and 65,359.68 is: 97,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,534.48 : 135,245.28 = 65,359.68 : x
  2. Step 2: Convert to fraction form
    90,534.48/135,245.28 = 65,359.68/x
  3. Step 3: Cross multiply
    90,534.48x = 135,245.28 × 65,359.68
  4. Step 4: Simplify right side
    90,534.48x = 8,839,588,222.31
  5. Step 5: Solve for x
    x = 8,839,588,222.31/90,534.48
  6. Step 6: Final answer
    x = 97,637.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.