Home / 87,856.16-121,241.31-47,569.95

Finding the Fourth Proportional to 87,856.16, 121,241.31 and 47,569.95

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Solution

The fourth proportional to 87,856.16, 121,241.31 and 47,569.95 is: 65,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.16 : 121,241.31 = 47,569.95 : x
  2. Step 2: Convert to fraction form
    87,856.16/121,241.31 = 47,569.95/x
  3. Step 3: Cross multiply
    87,856.16x = 121,241.31 × 47,569.95
  4. Step 4: Simplify right side
    87,856.16x = 5,767,443,054.63
  5. Step 5: Solve for x
    x = 5,767,443,054.63/87,856.16
  6. Step 6: Final answer
    x = 65,646.43

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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.