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Finding the Fourth Proportional to 74,491.40, 111,726.30 and 21,895.40

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Solution

The fourth proportional to 74,491.40, 111,726.30 and 21,895.40 is: 32,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,491.40 : 111,726.30 = 21,895.40 : x
  2. Step 2: Convert to fraction form
    74,491.40/111,726.30 = 21,895.40/x
  3. Step 3: Cross multiply
    74,491.40x = 111,726.30 × 21,895.40
  4. Step 4: Simplify right side
    74,491.40x = 2,446,292,029.02
  5. Step 5: Solve for x
    x = 2,446,292,029.02/74,491.40
  6. Step 6: Final answer
    x = 32,839.93

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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.