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Finding the Fourth Proportional to 64,857.09, 89,492.51 and 36,557.31

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Solution

The fourth proportional to 64,857.09, 89,492.51 and 36,557.31 is: 50,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,857.09 : 89,492.51 = 36,557.31 : x
  2. Step 2: Convert to fraction form
    64,857.09/89,492.51 = 36,557.31/x
  3. Step 3: Cross multiply
    64,857.09x = 89,492.51 × 36,557.31
  4. Step 4: Simplify right side
    64,857.09x = 3,271,605,430.75
  5. Step 5: Solve for x
    x = 3,271,605,430.75/64,857.09
  6. Step 6: Final answer
    x = 50,443.30

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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.