Home / 79,021,051.19-109,051,970.34-43,259,998.78

Finding the Fourth Proportional to 79,021,051.19, 109,051,970.34 and 43,259,998.78

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Solution

The fourth proportional to 79,021,051.19, 109,051,970.34 and 43,259,998.78 is: 59,700,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,021,051.19 : 109,051,970.34 = 43,259,998.78 : x
  2. Step 2: Convert to fraction form
    79,021,051.19/109,051,970.34 = 43,259,998.78/x
  3. Step 3: Cross multiply
    79,021,051.19x = 109,051,970.34 × 43,259,998.78
  4. Step 4: Simplify right side
    79,021,051.19x = 4,717,588,103,648,696
  5. Step 5: Solve for x
    x = 4,717,588,103,648,696/79,021,051.19
  6. Step 6: Final answer
    x = 59,700,396.70

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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.