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Finding the Fourth Proportional to 85,471.60, 117,949.08 and 51,948.40

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Solution

The fourth proportional to 85,471.60, 117,949.08 and 51,948.40 is: 71,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,471.60 : 117,949.08 = 51,948.40 : x
  2. Step 2: Convert to fraction form
    85,471.60/117,949.08 = 51,948.40/x
  3. Step 3: Cross multiply
    85,471.60x = 117,949.08 × 51,948.40
  4. Step 4: Simplify right side
    85,471.60x = 6,127,265,987.47
  5. Step 5: Solve for x
    x = 6,127,265,987.47/85,471.60
  6. Step 6: Final answer
    x = 71,687.74

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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.