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Finding the Fourth Proportional to 70,745.94, 97,631.82 and 38,916.18

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Solution

The fourth proportional to 70,745.94, 97,631.82 and 38,916.18 is: 53,705.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,745.94 : 97,631.82 = 38,916.18 : x
  2. Step 2: Convert to fraction form
    70,745.94/97,631.82 = 38,916.18/x
  3. Step 3: Cross multiply
    70,745.94x = 97,631.82 × 38,916.18
  4. Step 4: Simplify right side
    70,745.94x = 3,799,457,480.85
  5. Step 5: Solve for x
    x = 3,799,457,480.85/70,745.94
  6. Step 6: Final answer
    x = 53,705.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.