Home / 109,729.43-151,424.79-61,332.48

Finding the Fourth Proportional to 109,729.43, 151,424.79 and 61,332.48

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Solution

The fourth proportional to 109,729.43, 151,424.79 and 61,332.48 is: 84,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,729.43 : 151,424.79 = 61,332.48 : x
  2. Step 2: Convert to fraction form
    109,729.43/151,424.79 = 61,332.48/x
  3. Step 3: Cross multiply
    109,729.43x = 151,424.79 × 61,332.48
  4. Step 4: Simplify right side
    109,729.43x = 9,287,257,904.18
  5. Step 5: Solve for x
    x = 9,287,257,904.18/109,729.43
  6. Step 6: Final answer
    x = 84,637.81

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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.