Home / 78,311.12-108,121.38-46,490.24

Finding the Fourth Proportional to 78,311.12, 108,121.38 and 46,490.24

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Solution

The fourth proportional to 78,311.12, 108,121.38 and 46,490.24 is: 64,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,311.12 : 108,121.38 = 46,490.24 : x
  2. Step 2: Convert to fraction form
    78,311.12/108,121.38 = 46,490.24/x
  3. Step 3: Cross multiply
    78,311.12x = 108,121.38 × 46,490.24
  4. Step 4: Simplify right side
    78,311.12x = 5,026,588,905.33
  5. Step 5: Solve for x
    x = 5,026,588,905.33/78,311.12
  6. Step 6: Final answer
    x = 64,187.42

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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.