Home / 30,627,230.29-42,217,718.13-20,820,649.16

Finding the Fourth Proportional to 30,627,230.29, 42,217,718.13 and 20,820,649.16

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Solution

The fourth proportional to 30,627,230.29, 42,217,718.13 and 20,820,649.16 is: 28,699,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,627,230.29 : 42,217,718.13 = 20,820,649.16 : x
  2. Step 2: Convert to fraction form
    30,627,230.29/42,217,718.13 = 20,820,649.16/x
  3. Step 3: Cross multiply
    30,627,230.29x = 42,217,718.13 × 20,820,649.16
  4. Step 4: Simplify right side
    30,627,230.29x = 879,000,297,626,045.62
  5. Step 5: Solve for x
    x = 879,000,297,626,045.62/30,627,230.29
  6. Step 6: Final answer
    x = 28,699,960.44

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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.