Home / 30,328,489.40-45,492,734.10-21,719,145.20

Finding the Fourth Proportional to 30,328,489.40, 45,492,734.10 and 21,719,145.20

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Solution

The fourth proportional to 30,328,489.40, 45,492,734.10 and 21,719,145.20 is: 32,578,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328,489.40 : 45,492,734.10 = 21,719,145.20 : x
  2. Step 2: Convert to fraction form
    30,328,489.40/45,492,734.10 = 21,719,145.20/x
  3. Step 3: Cross multiply
    30,328,489.40x = 45,492,734.10 × 21,719,145.20
  4. Step 4: Simplify right side
    30,328,489.40x = 988,063,297,462,891.38
  5. Step 5: Solve for x
    x = 988,063,297,462,891.38/30,328,489.40
  6. Step 6: Final answer
    x = 32,578,717.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.