Home / 78,149,406.69-107,849,781.59-43,340,022.81

Finding the Fourth Proportional to 78,149,406.69, 107,849,781.59 and 43,340,022.81

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Solution

The fourth proportional to 78,149,406.69, 107,849,781.59 and 43,340,022.81 is: 59,811,228.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,149,406.69 : 107,849,781.59 = 43,340,022.81 : x
  2. Step 2: Convert to fraction form
    78,149,406.69/107,849,781.59 = 43,340,022.81/x
  3. Step 3: Cross multiply
    78,149,406.69x = 107,849,781.59 × 43,340,022.81
  4. Step 4: Simplify right side
    78,149,406.69x = 4,674,211,993,947,418
  5. Step 5: Solve for x
    x = 4,674,211,993,947,418/78,149,406.69
  6. Step 6: Final answer
    x = 59,811,228.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.