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Finding the Fourth Proportional to 76,310.30, 114,465.45 and 72,422.30

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Solution

The fourth proportional to 76,310.30, 114,465.45 and 72,422.30 is: 108,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,310.30 : 114,465.45 = 72,422.30 : x
  2. Step 2: Convert to fraction form
    76,310.30/114,465.45 = 72,422.30/x
  3. Step 3: Cross multiply
    76,310.30x = 114,465.45 × 72,422.30
  4. Step 4: Simplify right side
    76,310.30x = 8,289,851,159.54
  5. Step 5: Solve for x
    x = 8,289,851,159.54/76,310.30
  6. Step 6: Final answer
    x = 108,633.45

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1.5x scale

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.