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Finding the Fourth Proportional to 85,990.56, 118,636.56 and 56,199.84

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Solution

The fourth proportional to 85,990.56, 118,636.56 and 56,199.84 is: 77,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,990.56 : 118,636.56 = 56,199.84 : x
  2. Step 2: Convert to fraction form
    85,990.56/118,636.56 = 56,199.84/x
  3. Step 3: Cross multiply
    85,990.56x = 118,636.56 × 56,199.84
  4. Step 4: Simplify right side
    85,990.56x = 6,667,355,690.15
  5. Step 5: Solve for x
    x = 6,667,355,690.15/85,990.56
  6. Step 6: Final answer
    x = 77,535.90

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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.