Home / 81,449.40-112,384.10-51,217.16

Finding the Fourth Proportional to 81,449.40, 112,384.10 and 51,217.16

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Solution

The fourth proportional to 81,449.40, 112,384.10 and 51,217.16 is: 70,669.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.40 : 112,384.10 = 51,217.16 : x
  2. Step 2: Convert to fraction form
    81,449.40/112,384.10 = 51,217.16/x
  3. Step 3: Cross multiply
    81,449.40x = 112,384.10 × 51,217.16
  4. Step 4: Simplify right side
    81,449.40x = 5,755,994,431.16
  5. Step 5: Solve for x
    x = 5,755,994,431.16/81,449.40
  6. Step 6: Final answer
    x = 70,669.57

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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.