Home / 78,396.24-108,187.58-42,586.54

Finding the Fourth Proportional to 78,396.24, 108,187.58 and 42,586.54

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Solution

The fourth proportional to 78,396.24, 108,187.58 and 42,586.54 is: 58,769.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.24 : 108,187.58 = 42,586.54 : x
  2. Step 2: Convert to fraction form
    78,396.24/108,187.58 = 42,586.54/x
  3. Step 3: Cross multiply
    78,396.24x = 108,187.58 × 42,586.54
  4. Step 4: Simplify right side
    78,396.24x = 4,607,334,703.17
  5. Step 5: Solve for x
    x = 4,607,334,703.17/78,396.24
  6. Step 6: Final answer
    x = 58,769.84

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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.