Home / 30,894,836.78-42,636,867.66-17,143,800.91

Finding the Fourth Proportional to 30,894,836.78, 42,636,867.66 and 17,143,800.91

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Solution

The fourth proportional to 30,894,836.78, 42,636,867.66 and 17,143,800.91 is: 23,659,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,894,836.78 : 42,636,867.66 = 17,143,800.91 : x
  2. Step 2: Convert to fraction form
    30,894,836.78/42,636,867.66 = 17,143,800.91/x
  3. Step 3: Cross multiply
    30,894,836.78x = 42,636,867.66 × 17,143,800.91
  4. Step 4: Simplify right side
    30,894,836.78x = 730,957,970,482,465.25
  5. Step 5: Solve for x
    x = 730,957,970,482,465.25/30,894,836.78
  6. Step 6: Final answer
    x = 23,659,551.13

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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.