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Finding the Fourth Proportional to 74,423.60, 111,649.80 and 21,834.80

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Solution

The fourth proportional to 74,423.60, 111,649.80 and 21,834.80 is: 32,756.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,423.60 : 111,649.80 = 21,834.80 : x
  2. Step 2: Convert to fraction form
    74,423.60/111,649.80 = 21,834.80/x
  3. Step 3: Cross multiply
    74,423.60x = 111,649.80 × 21,834.80
  4. Step 4: Simplify right side
    74,423.60x = 2,437,851,053.04
  5. Step 5: Solve for x
    x = 2,437,851,053.04/74,423.60
  6. Step 6: Final answer
    x = 32,756.42

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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.