Home / 72,256,511.70-108,384,767.55-66,433,842.90

Finding the Fourth Proportional to 72,256,511.70, 108,384,767.55 and 66,433,842.90

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Solution

The fourth proportional to 72,256,511.70, 108,384,767.55 and 66,433,842.90 is: 99,650,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,256,511.70 : 108,384,767.55 = 66,433,842.90 : x
  2. Step 2: Convert to fraction form
    72,256,511.70/108,384,767.55 = 66,433,842.90/x
  3. Step 3: Cross multiply
    72,256,511.70x = 108,384,767.55 × 66,433,842.90
  4. Step 4: Simplify right side
    72,256,511.70x = 7,200,416,620,169,718
  5. Step 5: Solve for x
    x = 7,200,416,620,169,718/72,256,511.70
  6. Step 6: Final answer
    x = 99,650,764.35

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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.