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Finding the Fourth Proportional to 78,406.61, 108,193.29 and 44,408.30

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Solution

The fourth proportional to 78,406.61, 108,193.29 and 44,408.30 is: 61,279.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,406.61 : 108,193.29 = 44,408.30 : x
  2. Step 2: Convert to fraction form
    78,406.61/108,193.29 = 44,408.30/x
  3. Step 3: Cross multiply
    78,406.61x = 108,193.29 × 44,408.30
  4. Step 4: Simplify right side
    78,406.61x = 4,804,679,539.34
  5. Step 5: Solve for x
    x = 4,804,679,539.34/78,406.61
  6. Step 6: Final answer
    x = 61,279.02

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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.