Home / 74,743.84-103,145.25-40,753.72

Finding the Fourth Proportional to 74,743.84, 103,145.25 and 40,753.72

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Solution

The fourth proportional to 74,743.84, 103,145.25 and 40,753.72 is: 56,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,743.84 : 103,145.25 = 40,753.72 : x
  2. Step 2: Convert to fraction form
    74,743.84/103,145.25 = 40,753.72/x
  3. Step 3: Cross multiply
    74,743.84x = 103,145.25 × 40,753.72
  4. Step 4: Simplify right side
    74,743.84x = 4,203,552,637.83
  5. Step 5: Solve for x
    x = 4,203,552,637.83/74,743.84
  6. Step 6: Final answer
    x = 56,239.45

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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.