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Finding the Fourth Proportional to 64,173.84, 88,563.24 and 38,688.32

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Solution

The fourth proportional to 64,173.84, 88,563.24 and 38,688.32 is: 53,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,173.84 : 88,563.24 = 38,688.32 : x
  2. Step 2: Convert to fraction form
    64,173.84/88,563.24 = 38,688.32/x
  3. Step 3: Cross multiply
    64,173.84x = 88,563.24 × 38,688.32
  4. Step 4: Simplify right side
    64,173.84x = 3,426,362,526.54
  5. Step 5: Solve for x
    x = 3,426,362,526.54/64,173.84
  6. Step 6: Final answer
    x = 53,391.89

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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.