Home / 42,909.63-64,361.23-21,836.50

Finding the Fourth Proportional to 42,909.63, 64,361.23 and 21,836.50

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Solution

The fourth proportional to 42,909.63, 64,361.23 and 21,836.50 is: 32,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909.63 : 64,361.23 = 21,836.50 : x
  2. Step 2: Convert to fraction form
    42,909.63/64,361.23 = 21,836.50/x
  3. Step 3: Cross multiply
    42,909.63x = 64,361.23 × 21,836.50
  4. Step 4: Simplify right side
    42,909.63x = 1,405,423,998.90
  5. Step 5: Solve for x
    x = 1,405,423,998.90/42,909.63
  6. Step 6: Final answer
    x = 32,753.11

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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.