Home / 76,790.64-114,925.80-47,227.20

Finding the Fourth Proportional to 76,790.64, 114,925.80 and 47,227.20

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Solution

The fourth proportional to 76,790.64, 114,925.80 and 47,227.20 is: 70,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.64 : 114,925.80 = 47,227.20 : x
  2. Step 2: Convert to fraction form
    76,790.64/114,925.80 = 47,227.20/x
  3. Step 3: Cross multiply
    76,790.64x = 114,925.80 × 47,227.20
  4. Step 4: Simplify right side
    76,790.64x = 5,427,623,741.76
  5. Step 5: Solve for x
    x = 5,427,623,741.76/76,790.64
  6. Step 6: Final answer
    x = 70,680.80

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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.