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Finding the Fourth Proportional to 87,992.99, 121,530.56 and 59,649.47

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Solution

The fourth proportional to 87,992.99, 121,530.56 and 59,649.47 is: 82,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.99 : 121,530.56 = 59,649.47 : x
  2. Step 2: Convert to fraction form
    87,992.99/121,530.56 = 59,649.47/x
  3. Step 3: Cross multiply
    87,992.99x = 121,530.56 × 59,649.47
  4. Step 4: Simplify right side
    87,992.99x = 7,249,232,586.90
  5. Step 5: Solve for x
    x = 7,249,232,586.90/87,992.99
  6. Step 6: Final answer
    x = 82,384.21

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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.