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Finding the Fourth Proportional to 92,745.82, 139,102.57 and 42,821.66

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Solution

The fourth proportional to 92,745.82, 139,102.57 and 42,821.66 is: 64,225.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,745.82 : 139,102.57 = 42,821.66 : x
  2. Step 2: Convert to fraction form
    92,745.82/139,102.57 = 42,821.66/x
  3. Step 3: Cross multiply
    92,745.82x = 139,102.57 × 42,821.66
  4. Step 4: Simplify right side
    92,745.82x = 5,956,602,957.67
  5. Step 5: Solve for x
    x = 5,956,602,957.67/92,745.82
  6. Step 6: Final answer
    x = 64,225.03

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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.