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Finding the Fourth Proportional to 81,113.80, 121,649.10 and 24,953.80

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Solution

The fourth proportional to 81,113.80, 121,649.10 and 24,953.80 is: 37,424.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,113.80 : 121,649.10 = 24,953.80 : x
  2. Step 2: Convert to fraction form
    81,113.80/121,649.10 = 24,953.80/x
  3. Step 3: Cross multiply
    81,113.80x = 121,649.10 × 24,953.80
  4. Step 4: Simplify right side
    81,113.80x = 3,035,607,311.58
  5. Step 5: Solve for x
    x = 3,035,607,311.58/81,113.80
  6. Step 6: Final answer
    x = 37,424.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.