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Finding the Fourth Proportional to 84,012.72, 115,994.52 and 58,818.48

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Solution

The fourth proportional to 84,012.72, 115,994.52 and 58,818.48 is: 81,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,012.72 : 115,994.52 = 58,818.48 : x
  2. Step 2: Convert to fraction form
    84,012.72/115,994.52 = 58,818.48/x
  3. Step 3: Cross multiply
    84,012.72x = 115,994.52 × 58,818.48
  4. Step 4: Simplify right side
    84,012.72x = 6,822,621,354.73
  5. Step 5: Solve for x
    x = 6,822,621,354.73/84,012.72
  6. Step 6: Final answer
    x = 81,209.39

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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.