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Finding the Fourth Proportional to 80,058.78, 120,088.17 and 20,893.94

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Solution

The fourth proportional to 80,058.78, 120,088.17 and 20,893.94 is: 31,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,058.78 : 120,088.17 = 20,893.94 : x
  2. Step 2: Convert to fraction form
    80,058.78/120,088.17 = 20,893.94/x
  3. Step 3: Cross multiply
    80,058.78x = 120,088.17 × 20,893.94
  4. Step 4: Simplify right side
    80,058.78x = 2,509,114,699.71
  5. Step 5: Solve for x
    x = 2,509,114,699.71/80,058.78
  6. Step 6: Final answer
    x = 31,340.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.