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Finding the Fourth Proportional to 64,285.02, 88,702.79 and 40,394.79

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Solution

The fourth proportional to 64,285.02, 88,702.79 and 40,394.79 is: 55,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,285.02 : 88,702.79 = 40,394.79 : x
  2. Step 2: Convert to fraction form
    64,285.02/88,702.79 = 40,394.79/x
  3. Step 3: Cross multiply
    64,285.02x = 88,702.79 × 40,394.79
  4. Step 4: Simplify right side
    64,285.02x = 3,583,130,372.49
  5. Step 5: Solve for x
    x = 3,583,130,372.49/64,285.02
  6. Step 6: Final answer
    x = 55,738.19

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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.