Home / 81,336.99-112,315.10-51,172.59

Finding the Fourth Proportional to 81,336.99, 112,315.10 and 51,172.59

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Solution

The fourth proportional to 81,336.99, 112,315.10 and 51,172.59 is: 70,662.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336.99 : 112,315.10 = 51,172.59 : x
  2. Step 2: Convert to fraction form
    81,336.99/112,315.10 = 51,172.59/x
  3. Step 3: Cross multiply
    81,336.99x = 112,315.10 × 51,172.59
  4. Step 4: Simplify right side
    81,336.99x = 5,747,454,307.25
  5. Step 5: Solve for x
    x = 5,747,454,307.25/81,336.99
  6. Step 6: Final answer
    x = 70,662.24

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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.