Home / 80,640.40-111,298.29-46,644.16

Finding the Fourth Proportional to 80,640.40, 111,298.29 and 46,644.16

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Solution

The fourth proportional to 80,640.40, 111,298.29 and 46,644.16 is: 64,377.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.40 : 111,298.29 = 46,644.16 : x
  2. Step 2: Convert to fraction form
    80,640.40/111,298.29 = 46,644.16/x
  3. Step 3: Cross multiply
    80,640.40x = 111,298.29 × 46,644.16
  4. Step 4: Simplify right side
    80,640.40x = 5,191,415,246.49
  5. Step 5: Solve for x
    x = 5,191,415,246.49/80,640.40
  6. Step 6: Final answer
    x = 64,377.35

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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.