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Finding the Fourth Proportional to 85,116.96, 117,444.96 and 47,391.12

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Solution

The fourth proportional to 85,116.96, 117,444.96 and 47,391.12 is: 65,390.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,116.96 : 117,444.96 = 47,391.12 : x
  2. Step 2: Convert to fraction form
    85,116.96/117,444.96 = 47,391.12/x
  3. Step 3: Cross multiply
    85,116.96x = 117,444.96 × 47,391.12
  4. Step 4: Simplify right side
    85,116.96x = 5,565,848,192.76
  5. Step 5: Solve for x
    x = 5,565,848,192.76/85,116.96
  6. Step 6: Final answer
    x = 65,390.59

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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.