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Finding the Fourth Proportional to 86,445.70, 129,686.02 and 36,525.94

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Solution

The fourth proportional to 86,445.70, 129,686.02 and 36,525.94 is: 54,796.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,445.70 : 129,686.02 = 36,525.94 : x
  2. Step 2: Convert to fraction form
    86,445.70/129,686.02 = 36,525.94/x
  3. Step 3: Cross multiply
    86,445.70x = 129,686.02 × 36,525.94
  4. Step 4: Simplify right side
    86,445.70x = 4,736,903,785.36
  5. Step 5: Solve for x
    x = 4,736,903,785.36/86,445.70
  6. Step 6: Final answer
    x = 54,796.29

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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.