Home / 85,535.10-128,314.80-26,364.60

Finding the Fourth Proportional to 85,535.10, 128,314.80 and 26,364.60

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Solution

The fourth proportional to 85,535.10, 128,314.80 and 26,364.60 is: 39,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.10 : 128,314.80 = 26,364.60 : x
  2. Step 2: Convert to fraction form
    85,535.10/128,314.80 = 26,364.60/x
  3. Step 3: Cross multiply
    85,535.10x = 128,314.80 × 26,364.60
  4. Step 4: Simplify right side
    85,535.10x = 3,382,968,376.08
  5. Step 5: Solve for x
    x = 3,382,968,376.08/85,535.10
  6. Step 6: Final answer
    x = 39,550.65

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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.