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Finding the Fourth Proportional to 85,369.68, 128,021.70 and 58,994.46

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Solution

The fourth proportional to 85,369.68, 128,021.70 and 58,994.46 is: 88,469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,369.68 : 128,021.70 = 58,994.46 : x
  2. Step 2: Convert to fraction form
    85,369.68/128,021.70 = 58,994.46/x
  3. Step 3: Cross multiply
    85,369.68x = 128,021.70 × 58,994.46
  4. Step 4: Simplify right side
    85,369.68x = 7,552,571,059.78
  5. Step 5: Solve for x
    x = 7,552,571,059.78/85,369.68
  6. Step 6: Final answer
    x = 88,469.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.