Home / 47,785.85-71,687.40-19,690.55

Finding the Fourth Proportional to 47,785.85, 71,687.40 and 19,690.55

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Solution

The fourth proportional to 47,785.85, 71,687.40 and 19,690.55 is: 29,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,785.85 : 71,687.40 = 19,690.55 : x
  2. Step 2: Convert to fraction form
    47,785.85/71,687.40 = 19,690.55/x
  3. Step 3: Cross multiply
    47,785.85x = 71,687.40 × 19,690.55
  4. Step 4: Simplify right side
    47,785.85x = 1,411,564,334.07
  5. Step 5: Solve for x
    x = 1,411,564,334.07/47,785.85
  6. Step 6: Final answer
    x = 29,539.38

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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.