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Finding the Fourth Proportional to 85,398.98, 117,851.54 and 47,158.48

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Solution

The fourth proportional to 85,398.98, 117,851.54 and 47,158.48 is: 65,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.98 : 117,851.54 = 47,158.48 : x
  2. Step 2: Convert to fraction form
    85,398.98/117,851.54 = 47,158.48/x
  3. Step 3: Cross multiply
    85,398.98x = 117,851.54 × 47,158.48
  4. Step 4: Simplify right side
    85,398.98x = 5,557,699,492.06
  5. Step 5: Solve for x
    x = 5,557,699,492.06/85,398.98
  6. Step 6: Final answer
    x = 65,079.23

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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.