Home / 81,434.16-112,324.32-47,900.16

Finding the Fourth Proportional to 81,434.16, 112,324.32 and 47,900.16

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Solution

The fourth proportional to 81,434.16, 112,324.32 and 47,900.16 is: 66,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,434.16 : 112,324.32 = 47,900.16 : x
  2. Step 2: Convert to fraction form
    81,434.16/112,324.32 = 47,900.16/x
  3. Step 3: Cross multiply
    81,434.16x = 112,324.32 × 47,900.16
  4. Step 4: Simplify right side
    81,434.16x = 5,380,352,899.89
  5. Step 5: Solve for x
    x = 5,380,352,899.89/81,434.16
  6. Step 6: Final answer
    x = 66,069.97

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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.