Home / 75,931.60-113,896.80-19,771.60

Finding the Fourth Proportional to 75,931.60, 113,896.80 and 19,771.60

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Solution

The fourth proportional to 75,931.60, 113,896.80 and 19,771.60 is: 29,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,931.60 : 113,896.80 = 19,771.60 : x
  2. Step 2: Convert to fraction form
    75,931.60/113,896.80 = 19,771.60/x
  3. Step 3: Cross multiply
    75,931.60x = 113,896.80 × 19,771.60
  4. Step 4: Simplify right side
    75,931.60x = 2,251,921,970.88
  5. Step 5: Solve for x
    x = 2,251,921,970.88/75,931.60
  6. Step 6: Final answer
    x = 29,657.24

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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.