Home / 78,408.02-108,129.30-60,474.62

Finding the Fourth Proportional to 78,408.02, 108,129.30 and 60,474.62

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Solution

The fourth proportional to 78,408.02, 108,129.30 and 60,474.62 is: 83,398.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,408.02 : 108,129.30 = 60,474.62 : x
  2. Step 2: Convert to fraction form
    78,408.02/108,129.30 = 60,474.62/x
  3. Step 3: Cross multiply
    78,408.02x = 108,129.30 × 60,474.62
  4. Step 4: Simplify right side
    78,408.02x = 6,539,078,328.37
  5. Step 5: Solve for x
    x = 6,539,078,328.37/78,408.02
  6. Step 6: Final answer
    x = 83,398.08

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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.