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Finding the Fourth Proportional to 64,803.36, 89,423.28 and 36,516

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Solution

The fourth proportional to 64,803.36, 89,423.28 and 36,516 is: 50,389.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,803.36 : 89,423.28 = 36,516 : x
  2. Step 2: Convert to fraction form
    64,803.36/89,423.28 = 36,516/x
  3. Step 3: Cross multiply
    64,803.36x = 89,423.28 × 36,516
  4. Step 4: Simplify right side
    64,803.36x = 3,265,380,492.48
  5. Step 5: Solve for x
    x = 3,265,380,492.48/64,803.36
  6. Step 6: Final answer
    x = 50,389.06

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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.