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Finding the Fourth Proportional to 86,068.88, 118,679.16 and 55,814.48

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Solution

The fourth proportional to 86,068.88, 118,679.16 and 55,814.48 is: 76,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,068.88 : 118,679.16 = 55,814.48 : x
  2. Step 2: Convert to fraction form
    86,068.88/118,679.16 = 55,814.48/x
  3. Step 3: Cross multiply
    86,068.88x = 118,679.16 × 55,814.48
  4. Step 4: Simplify right side
    86,068.88x = 6,624,015,602.24
  5. Step 5: Solve for x
    x = 6,624,015,602.24/86,068.88
  6. Step 6: Final answer
    x = 76,961.80

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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.