Home / 78,398.24-108,190.34-42,588.54

Finding the Fourth Proportional to 78,398.24, 108,190.34 and 42,588.54

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Solution

The fourth proportional to 78,398.24, 108,190.34 and 42,588.54 is: 58,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,398.24 : 108,190.34 = 42,588.54 : x
  2. Step 2: Convert to fraction form
    78,398.24/108,190.34 = 42,588.54/x
  3. Step 3: Cross multiply
    78,398.24x = 108,190.34 × 42,588.54
  4. Step 4: Simplify right side
    78,398.24x = 4,607,668,622.70
  5. Step 5: Solve for x
    x = 4,607,668,622.70/78,398.24
  6. Step 6: Final answer
    x = 58,772.60

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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.