Home / 72,725,911.64-100,363,877.55-39,688,288.77

Finding the Fourth Proportional to 72,725,911.64, 100,363,877.55 and 39,688,288.77

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Solution

The fourth proportional to 72,725,911.64, 100,363,877.55 and 39,688,288.77 is: 54,770,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,911.64 : 100,363,877.55 = 39,688,288.77 : x
  2. Step 2: Convert to fraction form
    72,725,911.64/100,363,877.55 = 39,688,288.77/x
  3. Step 3: Cross multiply
    72,725,911.64x = 100,363,877.55 × 39,688,288.77
  4. Step 4: Simplify right side
    72,725,911.64x = 3,983,270,554,511,234.50
  5. Step 5: Solve for x
    x = 3,983,270,554,511,234.50/72,725,911.64
  6. Step 6: Final answer
    x = 54,770,995.16

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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.