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Finding the Fourth Proportional to 77,649.20, 116,476.40 and 21,484.61

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Solution

The fourth proportional to 77,649.20, 116,476.40 and 21,484.61 is: 32,227.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,649.20 : 116,476.40 = 21,484.61 : x
  2. Step 2: Convert to fraction form
    77,649.20/116,476.40 = 21,484.61/x
  3. Step 3: Cross multiply
    77,649.20x = 116,476.40 × 21,484.61
  4. Step 4: Simplify right side
    77,649.20x = 2,502,449,683.30
  5. Step 5: Solve for x
    x = 2,502,449,683.30/77,649.20
  6. Step 6: Final answer
    x = 32,227.63

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1.5x scale

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.