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Finding the Fourth Proportional to 74,796, 103,220.43 and 40,805.04

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Solution

The fourth proportional to 74,796, 103,220.43 and 40,805.04 is: 56,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,796 : 103,220.43 = 40,805.04 : x
  2. Step 2: Convert to fraction form
    74,796/103,220.43 = 40,805.04/x
  3. Step 3: Cross multiply
    74,796x = 103,220.43 × 40,805.04
  4. Step 4: Simplify right side
    74,796x = 4,211,913,774.97
  5. Step 5: Solve for x
    x = 4,211,913,774.97/74,796
  6. Step 6: Final answer
    x = 56,312.02

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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.