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Finding the Fourth Proportional to 64,455.84, 88,904 and 62,288.32

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Solution

The fourth proportional to 64,455.84, 88,904 and 62,288.32 is: 85,914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,455.84 : 88,904 = 62,288.32 : x
  2. Step 2: Convert to fraction form
    64,455.84/88,904 = 62,288.32/x
  3. Step 3: Cross multiply
    64,455.84x = 88,904 × 62,288.32
  4. Step 4: Simplify right side
    64,455.84x = 5,537,680,801.28
  5. Step 5: Solve for x
    x = 5,537,680,801.28/64,455.84
  6. Step 6: Final answer
    x = 85,914.34

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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.