Home / 76,977.45-106,228.35-42,983.91

Finding the Fourth Proportional to 76,977.45, 106,228.35 and 42,983.91

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Solution

The fourth proportional to 76,977.45, 106,228.35 and 42,983.91 is: 59,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,977.45 : 106,228.35 = 42,983.91 : x
  2. Step 2: Convert to fraction form
    76,977.45/106,228.35 = 42,983.91/x
  3. Step 3: Cross multiply
    76,977.45x = 106,228.35 × 42,983.91
  4. Step 4: Simplify right side
    76,977.45x = 4,566,109,835.85
  5. Step 5: Solve for x
    x = 4,566,109,835.85/76,977.45
  6. Step 6: Final answer
    x = 59,317.50

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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.