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Finding the Fourth Proportional to 85,520, 118,020.14 and 47,794.36

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Solution

The fourth proportional to 85,520, 118,020.14 and 47,794.36 is: 65,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520 : 118,020.14 = 47,794.36 : x
  2. Step 2: Convert to fraction form
    85,520/118,020.14 = 47,794.36/x
  3. Step 3: Cross multiply
    85,520x = 118,020.14 × 47,794.36
  4. Step 4: Simplify right side
    85,520x = 5,640,697,058.41
  5. Step 5: Solve for x
    x = 5,640,697,058.41/85,520
  6. Step 6: Final answer
    x = 65,957.64

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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.