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Finding the Fourth Proportional to 66,419.20, 99,628.80 and 24,860.80

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Solution

The fourth proportional to 66,419.20, 99,628.80 and 24,860.80 is: 37,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,419.20 : 99,628.80 = 24,860.80 : x
  2. Step 2: Convert to fraction form
    66,419.20/99,628.80 = 24,860.80/x
  3. Step 3: Cross multiply
    66,419.20x = 99,628.80 × 24,860.80
  4. Step 4: Simplify right side
    66,419.20x = 2,476,851,671.04
  5. Step 5: Solve for x
    x = 2,476,851,671.04/66,419.20
  6. Step 6: Final answer
    x = 37,291.20

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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.