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Finding the Fourth Proportional to 85,070.80, 117,396.54 and 47,345.06

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Solution

The fourth proportional to 85,070.80, 117,396.54 and 47,345.06 is: 65,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.80 : 117,396.54 = 47,345.06 : x
  2. Step 2: Convert to fraction form
    85,070.80/117,396.54 = 47,345.06/x
  3. Step 3: Cross multiply
    85,070.80x = 117,396.54 × 47,345.06
  4. Step 4: Simplify right side
    85,070.80x = 5,558,146,230.09
  5. Step 5: Solve for x
    x = 5,558,146,230.09/85,070.80
  6. Step 6: Final answer
    x = 65,335.53

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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.