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Finding the Fourth Proportional to 34,315.78, 47,356.41 and 19,411.78

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Solution

The fourth proportional to 34,315.78, 47,356.41 and 19,411.78 is: 26,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,315.78 : 47,356.41 = 19,411.78 : x
  2. Step 2: Convert to fraction form
    34,315.78/47,356.41 = 19,411.78/x
  3. Step 3: Cross multiply
    34,315.78x = 47,356.41 × 19,411.78
  4. Step 4: Simplify right side
    34,315.78x = 919,272,212.51
  5. Step 5: Solve for x
    x = 919,272,212.51/34,315.78
  6. Step 6: Final answer
    x = 26,788.61

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1.5x scale

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.