Home / 80,639.40-111,296.91-46,643.16

Finding the Fourth Proportional to 80,639.40, 111,296.91 and 46,643.16

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Solution

The fourth proportional to 80,639.40, 111,296.91 and 46,643.16 is: 64,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639.40 : 111,296.91 = 46,643.16 : x
  2. Step 2: Convert to fraction form
    80,639.40/111,296.91 = 46,643.16/x
  3. Step 3: Cross multiply
    80,639.40x = 111,296.91 × 46,643.16
  4. Step 4: Simplify right side
    80,639.40x = 5,191,239,580.64
  5. Step 5: Solve for x
    x = 5,191,239,580.64/80,639.40
  6. Step 6: Final answer
    x = 64,375.97

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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.