Home / 72,740,715.62-109,131,543.75-31,803,749.78

Finding the Fourth Proportional to 72,740,715.62, 109,131,543.75 and 31,803,749.78

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Solution

The fourth proportional to 72,740,715.62, 109,131,543.75 and 31,803,749.78 is: 47,714,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740,715.62 : 109,131,543.75 = 31,803,749.78 : x
  2. Step 2: Convert to fraction form
    72,740,715.62/109,131,543.75 = 31,803,749.78/x
  3. Step 3: Cross multiply
    72,740,715.62x = 109,131,543.75 × 31,803,749.78
  4. Step 4: Simplify right side
    72,740,715.62x = 3,470,792,310,530,123
  5. Step 5: Solve for x
    x = 3,470,792,310,530,123/72,740,715.62
  6. Step 6: Final answer
    x = 47,714,574.72

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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.