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Finding the Fourth Proportional to 85,339.79, 117,714.08 and 51,805.79

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Solution

The fourth proportional to 85,339.79, 117,714.08 and 51,805.79 is: 71,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,339.79 : 117,714.08 = 51,805.79 : x
  2. Step 2: Convert to fraction form
    85,339.79/117,714.08 = 51,805.79/x
  3. Step 3: Cross multiply
    85,339.79x = 117,714.08 × 51,805.79
  4. Step 4: Simplify right side
    85,339.79x = 6,098,270,449.47
  5. Step 5: Solve for x
    x = 6,098,270,449.47/85,339.79
  6. Step 6: Final answer
    x = 71,458.70

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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.