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Finding the Fourth Proportional to 64,283.31, 88,710.95 and 39,132.81

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Solution

The fourth proportional to 64,283.31, 88,710.95 and 39,132.81 is: 54,003.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,283.31 : 88,710.95 = 39,132.81 : x
  2. Step 2: Convert to fraction form
    64,283.31/88,710.95 = 39,132.81/x
  3. Step 3: Cross multiply
    64,283.31x = 88,710.95 × 39,132.81
  4. Step 4: Simplify right side
    64,283.31x = 3,471,508,751.27
  5. Step 5: Solve for x
    x = 3,471,508,751.27/64,283.31
  6. Step 6: Final answer
    x = 54,003.27

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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.