Home / 30,944,189.28-42,668,544.24-21,156,221.28

Finding the Fourth Proportional to 30,944,189.28, 42,668,544.24 and 21,156,221.28

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Solution

The fourth proportional to 30,944,189.28, 42,668,544.24 and 21,156,221.28 is: 29,172,041.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,944,189.28 : 42,668,544.24 = 21,156,221.28 : x
  2. Step 2: Convert to fraction form
    30,944,189.28/42,668,544.24 = 21,156,221.28/x
  3. Step 3: Cross multiply
    30,944,189.28x = 42,668,544.24 × 21,156,221.28
  4. Step 4: Simplify right side
    30,944,189.28x = 902,705,163,636,909.50
  5. Step 5: Solve for x
    x = 902,705,163,636,909.50/30,944,189.28
  6. Step 6: Final answer
    x = 29,172,041.17

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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.