Home / 40,858.20-61,256.12-21,124.16

Finding the Fourth Proportional to 40,858.20, 61,256.12 and 21,124.16

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Solution

The fourth proportional to 40,858.20, 61,256.12 and 21,124.16 is: 31,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,858.20 : 61,256.12 = 21,124.16 : x
  2. Step 2: Convert to fraction form
    40,858.20/61,256.12 = 21,124.16/x
  3. Step 3: Cross multiply
    40,858.20x = 61,256.12 × 21,124.16
  4. Step 4: Simplify right side
    40,858.20x = 1,293,984,079.86
  5. Step 5: Solve for x
    x = 1,293,984,079.86/40,858.20
  6. Step 6: Final answer
    x = 31,670.12

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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.