Home / 72,259,190.55-99,717,792.45-39,219,451.74

Finding the Fourth Proportional to 72,259,190.55, 99,717,792.45 and 39,219,451.74

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Solution

The fourth proportional to 72,259,190.55, 99,717,792.45 and 39,219,451.74 is: 54,122,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259,190.55 : 99,717,792.45 = 39,219,451.74 : x
  2. Step 2: Convert to fraction form
    72,259,190.55/99,717,792.45 = 39,219,451.74/x
  3. Step 3: Cross multiply
    72,259,190.55x = 99,717,792.45 × 39,219,451.74
  4. Step 4: Simplify right side
    72,259,190.55x = 3,910,877,148,612,111.50
  5. Step 5: Solve for x
    x = 3,910,877,148,612,111.50/72,259,190.55
  6. Step 6: Final answer
    x = 54,122,902.83

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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.