Home / 81,117.10-111,940.41-45,307.63

Finding the Fourth Proportional to 81,117.10, 111,940.41 and 45,307.63

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Solution

The fourth proportional to 81,117.10, 111,940.41 and 45,307.63 is: 62,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,117.10 : 111,940.41 = 45,307.63 : x
  2. Step 2: Convert to fraction form
    81,117.10/111,940.41 = 45,307.63/x
  3. Step 3: Cross multiply
    81,117.10x = 111,940.41 × 45,307.63
  4. Step 4: Simplify right side
    81,117.10x = 5,071,754,678.33
  5. Step 5: Solve for x
    x = 5,071,754,678.33/81,117.10
  6. Step 6: Final answer
    x = 62,523.87

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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.