Home / 80,585.87-111,172.73-53,702.19

Finding the Fourth Proportional to 80,585.87, 111,172.73 and 53,702.19

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Solution

The fourth proportional to 80,585.87, 111,172.73 and 53,702.19 is: 74,085.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,585.87 : 111,172.73 = 53,702.19 : x
  2. Step 2: Convert to fraction form
    80,585.87/111,172.73 = 53,702.19/x
  3. Step 3: Cross multiply
    80,585.87x = 111,172.73 × 53,702.19
  4. Step 4: Simplify right side
    80,585.87x = 5,970,218,800.77
  5. Step 5: Solve for x
    x = 5,970,218,800.77/80,585.87
  6. Step 6: Final answer
    x = 74,085.19

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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.