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Finding the Fourth Proportional to 85,792.72, 118,400.52 and 53,988.88

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Solution

The fourth proportional to 85,792.72, 118,400.52 and 53,988.88 is: 74,508.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.72 : 118,400.52 = 53,988.88 : x
  2. Step 2: Convert to fraction form
    85,792.72/118,400.52 = 53,988.88/x
  3. Step 3: Cross multiply
    85,792.72x = 118,400.52 × 53,988.88
  4. Step 4: Simplify right side
    85,792.72x = 6,392,311,466.22
  5. Step 5: Solve for x
    x = 6,392,311,466.22/85,792.72
  6. Step 6: Final answer
    x = 74,508.79

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1.5x scale

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.