Home / 76,288.10-105,221.50-52,415.78

Finding the Fourth Proportional to 76,288.10, 105,221.50 and 52,415.78

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Solution

The fourth proportional to 76,288.10, 105,221.50 and 52,415.78 is: 72,295.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,288.10 : 105,221.50 = 52,415.78 : x
  2. Step 2: Convert to fraction form
    76,288.10/105,221.50 = 52,415.78/x
  3. Step 3: Cross multiply
    76,288.10x = 105,221.50 × 52,415.78
  4. Step 4: Simplify right side
    76,288.10x = 5,515,266,338.12
  5. Step 5: Solve for x
    x = 5,515,266,338.12/76,288.10
  6. Step 6: Final answer
    x = 72,295.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.