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Finding the Fourth Proportional to 86,965.88, 120,014.86 and 48,728.28

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Solution

The fourth proportional to 86,965.88, 120,014.86 and 48,728.28 is: 67,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,965.88 : 120,014.86 = 48,728.28 : x
  2. Step 2: Convert to fraction form
    86,965.88/120,014.86 = 48,728.28/x
  3. Step 3: Cross multiply
    86,965.88x = 120,014.86 × 48,728.28
  4. Step 4: Simplify right side
    86,965.88x = 5,848,117,702.24
  5. Step 5: Solve for x
    x = 5,848,117,702.24/86,965.88
  6. Step 6: Final answer
    x = 67,246.12

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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.