Home / 72,557,109.76-100,128,811.50-39,962,061.76

Finding the Fourth Proportional to 72,557,109.76, 100,128,811.50 and 39,962,061.76

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Solution

The fourth proportional to 72,557,109.76, 100,128,811.50 and 39,962,061.76 is: 55,147,645.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557,109.76 : 100,128,811.50 = 39,962,061.76 : x
  2. Step 2: Convert to fraction form
    72,557,109.76/100,128,811.50 = 39,962,061.76/x
  3. Step 3: Cross multiply
    72,557,109.76x = 100,128,811.50 × 39,962,061.76
  4. Step 4: Simplify right side
    72,557,109.76x = 4,001,353,749,118,398
  5. Step 5: Solve for x
    x = 4,001,353,749,118,398/72,557,109.76
  6. Step 6: Final answer
    x = 55,147,645.25

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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.