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Finding the Fourth Proportional to 76,417.70, 114,407.85 and 67,669.70

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Solution

The fourth proportional to 76,417.70, 114,407.85 and 67,669.70 is: 101,310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,417.70 : 114,407.85 = 67,669.70 : x
  2. Step 2: Convert to fraction form
    76,417.70/114,407.85 = 67,669.70/x
  3. Step 3: Cross multiply
    76,417.70x = 114,407.85 × 67,669.70
  4. Step 4: Simplify right side
    76,417.70x = 7,741,944,887.15
  5. Step 5: Solve for x
    x = 7,741,944,887.15/76,417.70
  6. Step 6: Final answer
    x = 101,310.89

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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.