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Finding the Fourth Proportional to 32,702.70, 45,115.93 and 20,581.69

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Solution

The fourth proportional to 32,702.70, 45,115.93 and 20,581.69 is: 28,394.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,702.70 : 45,115.93 = 20,581.69 : x
  2. Step 2: Convert to fraction form
    32,702.70/45,115.93 = 20,581.69/x
  3. Step 3: Cross multiply
    32,702.70x = 45,115.93 × 20,581.69
  4. Step 4: Simplify right side
    32,702.70x = 928,562,038.81
  5. Step 5: Solve for x
    x = 928,562,038.81/32,702.70
  6. Step 6: Final answer
    x = 28,394.05

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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.