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Finding the Fourth Proportional to 64,281, 88,707.81 and 35,987.28

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Solution

The fourth proportional to 64,281, 88,707.81 and 35,987.28 is: 49,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,281 : 88,707.81 = 35,987.28 : x
  2. Step 2: Convert to fraction form
    64,281/88,707.81 = 35,987.28/x
  3. Step 3: Cross multiply
    64,281x = 88,707.81 × 35,987.28
  4. Step 4: Simplify right side
    64,281x = 3,192,352,796.66
  5. Step 5: Solve for x
    x = 3,192,352,796.66/64,281
  6. Step 6: Final answer
    x = 49,662.46

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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.