Home / 30,960,121.75-42,689,866.12-19,781,846.58

Finding the Fourth Proportional to 30,960,121.75, 42,689,866.12 and 19,781,846.58

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Solution

The fourth proportional to 30,960,121.75, 42,689,866.12 and 19,781,846.58 is: 27,276,520.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960,121.75 : 42,689,866.12 = 19,781,846.58 : x
  2. Step 2: Convert to fraction form
    30,960,121.75/42,689,866.12 = 19,781,846.58/x
  3. Step 3: Cross multiply
    30,960,121.75x = 42,689,866.12 × 19,781,846.58
  4. Step 4: Simplify right side
    30,960,121.75x = 844,484,382,060,501.75
  5. Step 5: Solve for x
    x = 844,484,382,060,501.75/30,960,121.75
  6. Step 6: Final answer
    x = 27,276,520.06

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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.