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Finding the Fourth Proportional to 64,387.54, 88,859.73 and 40,534.66

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Solution

The fourth proportional to 64,387.54, 88,859.73 and 40,534.66 is: 55,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,387.54 : 88,859.73 = 40,534.66 : x
  2. Step 2: Convert to fraction form
    64,387.54/88,859.73 = 40,534.66/x
  3. Step 3: Cross multiply
    64,387.54x = 88,859.73 × 40,534.66
  4. Step 4: Simplify right side
    64,387.54x = 3,601,898,943.24
  5. Step 5: Solve for x
    x = 3,601,898,943.24/64,387.54
  6. Step 6: Final answer
    x = 55,940.93

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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.