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Finding the Fourth Proportional to 85,482.40, 128,237.52 and 26,318.08

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Solution

The fourth proportional to 85,482.40, 128,237.52 and 26,318.08 is: 39,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,482.40 : 128,237.52 = 26,318.08 : x
  2. Step 2: Convert to fraction form
    85,482.40/128,237.52 = 26,318.08/x
  3. Step 3: Cross multiply
    85,482.40x = 128,237.52 × 26,318.08
  4. Step 4: Simplify right side
    85,482.40x = 3,374,965,310.36
  5. Step 5: Solve for x
    x = 3,374,965,310.36/85,482.40
  6. Step 6: Final answer
    x = 39,481.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.