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Finding the Fourth Proportional to 84,829.60, 127,341.60 and 45,366.40

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Solution

The fourth proportional to 84,829.60, 127,341.60 and 45,366.40 is: 68,101.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,829.60 : 127,341.60 = 45,366.40 : x
  2. Step 2: Convert to fraction form
    84,829.60/127,341.60 = 45,366.40/x
  3. Step 3: Cross multiply
    84,829.60x = 127,341.60 × 45,366.40
  4. Step 4: Simplify right side
    84,829.60x = 5,777,029,962.24
  5. Step 5: Solve for x
    x = 5,777,029,962.24/84,829.60
  6. Step 6: Final answer
    x = 68,101.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.