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Finding the Fourth Proportional to 86,816.70, 130,152.15 and 45,263.70

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Solution

The fourth proportional to 86,816.70, 130,152.15 and 45,263.70 is: 67,857.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,816.70 : 130,152.15 = 45,263.70 : x
  2. Step 2: Convert to fraction form
    86,816.70/130,152.15 = 45,263.70/x
  3. Step 3: Cross multiply
    86,816.70x = 130,152.15 × 45,263.70
  4. Step 4: Simplify right side
    86,816.70x = 5,891,167,871.96
  5. Step 5: Solve for x
    x = 5,891,167,871.96/86,816.70
  6. Step 6: Final answer
    x = 67,857.54

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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.