Home / 72,617,889.35-100,209,769.83-39,577,429.64

Finding the Fourth Proportional to 72,617,889.35, 100,209,769.83 and 39,577,429.64

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Solution

The fourth proportional to 72,617,889.35, 100,209,769.83 and 39,577,429.64 is: 54,615,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617,889.35 : 100,209,769.83 = 39,577,429.64 : x
  2. Step 2: Convert to fraction form
    72,617,889.35/100,209,769.83 = 39,577,429.64/x
  3. Step 3: Cross multiply
    72,617,889.35x = 100,209,769.83 × 39,577,429.64
  4. Step 4: Simplify right side
    72,617,889.35x = 3,966,045,114,687,420
  5. Step 5: Solve for x
    x = 3,966,045,114,687,420/72,617,889.35
  6. Step 6: Final answer
    x = 54,615,262.85

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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.