Home / 76,788.64-114,922.80-47,225.20

Finding the Fourth Proportional to 76,788.64, 114,922.80 and 47,225.20

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Solution

The fourth proportional to 76,788.64, 114,922.80 and 47,225.20 is: 70,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,788.64 : 114,922.80 = 47,225.20 : x
  2. Step 2: Convert to fraction form
    76,788.64/114,922.80 = 47,225.20/x
  3. Step 3: Cross multiply
    76,788.64x = 114,922.80 × 47,225.20
  4. Step 4: Simplify right side
    76,788.64x = 5,427,252,214.56
  5. Step 5: Solve for x
    x = 5,427,252,214.56/76,788.64
  6. Step 6: Final answer
    x = 70,677.80

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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.