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Finding the Fourth Proportional to 74,055.76, 102,199.52 and 40,521.76

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Solution

The fourth proportional to 74,055.76, 102,199.52 and 40,521.76 is: 55,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,055.76 : 102,199.52 = 40,521.76 : x
  2. Step 2: Convert to fraction form
    74,055.76/102,199.52 = 40,521.76/x
  3. Step 3: Cross multiply
    74,055.76x = 102,199.52 × 40,521.76
  4. Step 4: Simplify right side
    74,055.76x = 4,141,304,421.56
  5. Step 5: Solve for x
    x = 4,141,304,421.56/74,055.76
  6. Step 6: Final answer
    x = 55,921.44

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1.5x scale

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.