Home / 30,985,259.69-42,758,799.85-16,855,977.71

Finding the Fourth Proportional to 30,985,259.69, 42,758,799.85 and 16,855,977.71

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Solution

The fourth proportional to 30,985,259.69, 42,758,799.85 and 16,855,977.71 is: 23,260,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985,259.69 : 42,758,799.85 = 16,855,977.71 : x
  2. Step 2: Convert to fraction form
    30,985,259.69/42,758,799.85 = 16,855,977.71/x
  3. Step 3: Cross multiply
    30,985,259.69x = 42,758,799.85 × 16,855,977.71
  4. Step 4: Simplify right side
    30,985,259.69x = 720,741,376,922,017.25
  5. Step 5: Solve for x
    x = 720,741,376,922,017.25/30,985,259.69
  6. Step 6: Final answer
    x = 23,260,782.20

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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.