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Finding the Fourth Proportional to 32,756.40, 45,190.71 and 20,652.90

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Solution

The fourth proportional to 32,756.40, 45,190.71 and 20,652.90 is: 28,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,756.40 : 45,190.71 = 20,652.90 : x
  2. Step 2: Convert to fraction form
    32,756.40/45,190.71 = 20,652.90/x
  3. Step 3: Cross multiply
    32,756.40x = 45,190.71 × 20,652.90
  4. Step 4: Simplify right side
    32,756.40x = 933,319,172.19
  5. Step 5: Solve for x
    x = 933,319,172.19/32,756.40
  6. Step 6: Final answer
    x = 28,492.73

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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.