Home / 87,710.43-121,040.35-47,424.21

Finding the Fourth Proportional to 87,710.43, 121,040.35 and 47,424.21

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Solution

The fourth proportional to 87,710.43, 121,040.35 and 47,424.21 is: 65,445.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.43 : 121,040.35 = 47,424.21 : x
  2. Step 2: Convert to fraction form
    87,710.43/121,040.35 = 47,424.21/x
  3. Step 3: Cross multiply
    87,710.43x = 121,040.35 × 47,424.21
  4. Step 4: Simplify right side
    87,710.43x = 5,740,242,976.87
  5. Step 5: Solve for x
    x = 5,740,242,976.87/87,710.43
  6. Step 6: Final answer
    x = 65,445.39

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1.5x scale

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.