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Finding the Fourth Proportional to 85,570, 118,086.90 and 47,844.16

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Solution

The fourth proportional to 85,570, 118,086.90 and 47,844.16 is: 66,025.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,570 : 118,086.90 = 47,844.16 : x
  2. Step 2: Convert to fraction form
    85,570/118,086.90 = 47,844.16/x
  3. Step 3: Cross multiply
    85,570x = 118,086.90 × 47,844.16
  4. Step 4: Simplify right side
    85,570x = 5,649,768,537.50
  5. Step 5: Solve for x
    x = 5,649,768,537.50/85,570
  6. Step 6: Final answer
    x = 66,025.11

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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.