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Finding the Fourth Proportional to 74,889, 103,346.91 and 41,355

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Solution

The fourth proportional to 74,889, 103,346.91 and 41,355 is: 57,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,889 : 103,346.91 = 41,355 : x
  2. Step 2: Convert to fraction form
    74,889/103,346.91 = 41,355/x
  3. Step 3: Cross multiply
    74,889x = 103,346.91 × 41,355
  4. Step 4: Simplify right side
    74,889x = 4,273,911,463.05
  5. Step 5: Solve for x
    x = 4,273,911,463.05/74,889
  6. Step 6: Final answer
    x = 57,069.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.