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Finding the Fourth Proportional to 85,480.48, 117,962.40 and 47,242.60

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Solution

The fourth proportional to 85,480.48, 117,962.40 and 47,242.60 is: 65,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,480.48 : 117,962.40 = 47,242.60 : x
  2. Step 2: Convert to fraction form
    85,480.48/117,962.40 = 47,242.60/x
  3. Step 3: Cross multiply
    85,480.48x = 117,962.40 × 47,242.60
  4. Step 4: Simplify right side
    85,480.48x = 5,572,850,478.24
  5. Step 5: Solve for x
    x = 5,572,850,478.24/85,480.48
  6. Step 6: Final answer
    x = 65,194.42

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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.