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Finding the Fourth Proportional to 74,358, 111,515.13 and 21,754.98

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Solution

The fourth proportional to 74,358, 111,515.13 and 21,754.98 is: 32,626.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,358 : 111,515.13 = 21,754.98 : x
  2. Step 2: Convert to fraction form
    74,358/111,515.13 = 21,754.98/x
  3. Step 3: Cross multiply
    74,358x = 111,515.13 × 21,754.98
  4. Step 4: Simplify right side
    74,358x = 2,426,009,422.85
  5. Step 5: Solve for x
    x = 2,426,009,422.85/74,358
  6. Step 6: Final answer
    x = 32,626.07

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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.