Home / 76,910.94-106,137.12-42,455.69

Finding the Fourth Proportional to 76,910.94, 106,137.12 and 42,455.69

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Solution

The fourth proportional to 76,910.94, 106,137.12 and 42,455.69 is: 58,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,910.94 : 106,137.12 = 42,455.69 : x
  2. Step 2: Convert to fraction form
    76,910.94/106,137.12 = 42,455.69/x
  3. Step 3: Cross multiply
    76,910.94x = 106,137.12 × 42,455.69
  4. Step 4: Simplify right side
    76,910.94x = 4,506,124,929.56
  5. Step 5: Solve for x
    x = 4,506,124,929.56/76,910.94
  6. Step 6: Final answer
    x = 58,588.87

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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.