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Finding the Fourth Proportional to 86,283.42, 129,465.93 and 36,374.94

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Solution

The fourth proportional to 86,283.42, 129,465.93 and 36,374.94 is: 54,579.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,283.42 : 129,465.93 = 36,374.94 : x
  2. Step 2: Convert to fraction form
    86,283.42/129,465.93 = 36,374.94/x
  3. Step 3: Cross multiply
    86,283.42x = 129,465.93 × 36,374.94
  4. Step 4: Simplify right side
    86,283.42x = 4,709,315,435.79
  5. Step 5: Solve for x
    x = 4,709,315,435.79/86,283.42
  6. Step 6: Final answer
    x = 54,579.61

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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.