Home / 77,214,932.20-115,864,388.70-31,781,319.40

Finding the Fourth Proportional to 77,214,932.20, 115,864,388.70 and 31,781,319.40

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Solution

The fourth proportional to 77,214,932.20, 115,864,388.70 and 31,781,319.40 is: 47,689,262.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,214,932.20 : 115,864,388.70 = 31,781,319.40 : x
  2. Step 2: Convert to fraction form
    77,214,932.20/115,864,388.70 = 31,781,319.40/x
  3. Step 3: Cross multiply
    77,214,932.20x = 115,864,388.70 × 31,781,319.40
  4. Step 4: Simplify right side
    77,214,932.20x = 3,682,323,144,360,450.50
  5. Step 5: Solve for x
    x = 3,682,323,144,360,450.50/77,214,932.20
  6. Step 6: Final answer
    x = 47,689,262.16

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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.