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Finding the Fourth Proportional to 65,172.04, 89,916.50 and 36,487.48

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Solution

The fourth proportional to 65,172.04, 89,916.50 and 36,487.48 is: 50,341.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,172.04 : 89,916.50 = 36,487.48 : x
  2. Step 2: Convert to fraction form
    65,172.04/89,916.50 = 36,487.48/x
  3. Step 3: Cross multiply
    65,172.04x = 89,916.50 × 36,487.48
  4. Step 4: Simplify right side
    65,172.04x = 3,280,826,495.42
  5. Step 5: Solve for x
    x = 3,280,826,495.42/65,172.04
  6. Step 6: Final answer
    x = 50,341.01

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Why These Related Problems?

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