Home / 79,166.54-109,250-42,868.38

Finding the Fourth Proportional to 79,166.54, 109,250 and 42,868.38

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Solution

The fourth proportional to 79,166.54, 109,250 and 42,868.38 is: 59,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,166.54 : 109,250 = 42,868.38 : x
  2. Step 2: Convert to fraction form
    79,166.54/109,250 = 42,868.38/x
  3. Step 3: Cross multiply
    79,166.54x = 109,250 × 42,868.38
  4. Step 4: Simplify right side
    79,166.54x = 4,683,370,515
  5. Step 5: Solve for x
    x = 4,683,370,515/79,166.54
  6. Step 6: Final answer
    x = 59,158.46

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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.