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Finding the Fourth Proportional to 30,107.46, 44,978.06 and 19,490.99

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Solution

The fourth proportional to 30,107.46, 44,978.06 and 19,490.99 is: 29,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,107.46 : 44,978.06 = 19,490.99 : x
  2. Step 2: Convert to fraction form
    30,107.46/44,978.06 = 19,490.99/x
  3. Step 3: Cross multiply
    30,107.46x = 44,978.06 × 19,490.99
  4. Step 4: Simplify right side
    30,107.46x = 876,666,917.68
  5. Step 5: Solve for x
    x = 876,666,917.68/30,107.46
  6. Step 6: Final answer
    x = 29,117.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.