Home / 81,630,311.60-112,645,577.40-50,689,817.12

Finding the Fourth Proportional to 81,630,311.60, 112,645,577.40 and 50,689,817.12

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Solution

The fourth proportional to 81,630,311.60, 112,645,577.40 and 50,689,817.12 is: 69,949,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630,311.60 : 112,645,577.40 = 50,689,817.12 : x
  2. Step 2: Convert to fraction form
    81,630,311.60/112,645,577.40 = 50,689,817.12/x
  3. Step 3: Cross multiply
    81,630,311.60x = 112,645,577.40 × 50,689,817.12
  4. Step 4: Simplify right side
    81,630,311.60x = 5,709,983,717,782,805
  5. Step 5: Solve for x
    x = 5,709,983,717,782,805/81,630,311.60
  6. Step 6: Final answer
    x = 69,949,306.89

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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.