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Finding the Fourth Proportional to 85,535.68, 118,043.04 and 47,809.92

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Solution

The fourth proportional to 85,535.68, 118,043.04 and 47,809.92 is: 65,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.68 : 118,043.04 = 47,809.92 : x
  2. Step 2: Convert to fraction form
    85,535.68/118,043.04 = 47,809.92/x
  3. Step 3: Cross multiply
    85,535.68x = 118,043.04 × 47,809.92
  4. Step 4: Simplify right side
    85,535.68x = 5,643,628,298.96
  5. Step 5: Solve for x
    x = 5,643,628,298.96/85,535.68
  6. Step 6: Final answer
    x = 65,979.81

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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.