Home / 87,933.13-121,347.56-47,647.98

Finding the Fourth Proportional to 87,933.13, 121,347.56 and 47,647.98

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Solution

The fourth proportional to 87,933.13, 121,347.56 and 47,647.98 is: 65,754.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,933.13 : 121,347.56 = 47,647.98 : x
  2. Step 2: Convert to fraction form
    87,933.13/121,347.56 = 47,647.98/x
  3. Step 3: Cross multiply
    87,933.13x = 121,347.56 × 47,647.98
  4. Step 4: Simplify right side
    87,933.13x = 5,781,966,111.93
  5. Step 5: Solve for x
    x = 5,781,966,111.93/87,933.13
  6. Step 6: Final answer
    x = 65,754.13

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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.