Home / 77,305,871.40-115,972,803.90-38,870,658.60

Finding the Fourth Proportional to 77,305,871.40, 115,972,803.90 and 38,870,658.60

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Solution

The fourth proportional to 77,305,871.40, 115,972,803.90 and 38,870,658.60 is: 58,313,025.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,305,871.40 : 115,972,803.90 = 38,870,658.60 : x
  2. Step 2: Convert to fraction form
    77,305,871.40/115,972,803.90 = 38,870,658.60/x
  3. Step 3: Cross multiply
    77,305,871.40x = 115,972,803.90 × 38,870,658.60
  4. Step 4: Simplify right side
    77,305,871.40x = 4,507,939,267,281,649
  5. Step 5: Solve for x
    x = 4,507,939,267,281,649/77,305,871.40
  6. Step 6: Final answer
    x = 58,313,025.72

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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.