Home / 74,764.89-103,173.66-40,774.05

Finding the Fourth Proportional to 74,764.89, 103,173.66 and 40,774.05

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Solution

The fourth proportional to 74,764.89, 103,173.66 and 40,774.05 is: 56,267.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,764.89 : 103,173.66 = 40,774.05 : x
  2. Step 2: Convert to fraction form
    74,764.89/103,173.66 = 40,774.05/x
  3. Step 3: Cross multiply
    74,764.89x = 103,173.66 × 40,774.05
  4. Step 4: Simplify right side
    74,764.89x = 4,206,807,971.52
  5. Step 5: Solve for x
    x = 4,206,807,971.52/74,764.89
  6. Step 6: Final answer
    x = 56,267.16

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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.