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Finding the Fourth Proportional to 92,745.60, 139,114.48 and 42,809.12

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Solution

The fourth proportional to 92,745.60, 139,114.48 and 42,809.12 is: 64,211.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,745.60 : 139,114.48 = 42,809.12 : x
  2. Step 2: Convert to fraction form
    92,745.60/139,114.48 = 42,809.12/x
  3. Step 3: Cross multiply
    92,745.60x = 139,114.48 × 42,809.12
  4. Step 4: Simplify right side
    92,745.60x = 5,955,368,468.06
  5. Step 5: Solve for x
    x = 5,955,368,468.06/92,745.60
  6. Step 6: Final answer
    x = 64,211.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.