Home / 87,786.98-121,145.64-47,501.45

Finding the Fourth Proportional to 87,786.98, 121,145.64 and 47,501.45

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Solution

The fourth proportional to 87,786.98, 121,145.64 and 47,501.45 is: 65,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,786.98 : 121,145.64 = 47,501.45 : x
  2. Step 2: Convert to fraction form
    87,786.98/121,145.64 = 47,501.45/x
  3. Step 3: Cross multiply
    87,786.98x = 121,145.64 × 47,501.45
  4. Step 4: Simplify right side
    87,786.98x = 5,754,594,180.26
  5. Step 5: Solve for x
    x = 5,754,594,180.26/87,786.98
  6. Step 6: Final answer
    x = 65,551.80

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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.