Home / 78,633.78-108,516.57-42,825.74

Finding the Fourth Proportional to 78,633.78, 108,516.57 and 42,825.74

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Solution

The fourth proportional to 78,633.78, 108,516.57 and 42,825.74 is: 59,100.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633.78 : 108,516.57 = 42,825.74 : x
  2. Step 2: Convert to fraction form
    78,633.78/108,516.57 = 42,825.74/x
  3. Step 3: Cross multiply
    78,633.78x = 108,516.57 × 42,825.74
  4. Step 4: Simplify right side
    78,633.78x = 4,647,302,412.51
  5. Step 5: Solve for x
    x = 4,647,302,412.51/78,633.78
  6. Step 6: Final answer
    x = 59,100.59

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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.