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Finding the Fourth Proportional to 84,865.52, 117,118.12 and 47,139.77

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Solution

The fourth proportional to 84,865.52, 117,118.12 and 47,139.77 is: 65,054.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865.52 : 117,118.12 = 47,139.77 : x
  2. Step 2: Convert to fraction form
    84,865.52/117,118.12 = 47,139.77/x
  3. Step 3: Cross multiply
    84,865.52x = 117,118.12 × 47,139.77
  4. Step 4: Simplify right side
    84,865.52x = 5,520,920,536.19
  5. Step 5: Solve for x
    x = 5,520,920,536.19/84,865.52
  6. Step 6: Final answer
    x = 65,054.93

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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.