Home / 78,097,399.94-107,772,078.96-42,813,999.15

Finding the Fourth Proportional to 78,097,399.94, 107,772,078.96 and 42,813,999.15

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Solution

The fourth proportional to 78,097,399.94, 107,772,078.96 and 42,813,999.15 is: 59,082,039.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097,399.94 : 107,772,078.96 = 42,813,999.15 : x
  2. Step 2: Convert to fraction form
    78,097,399.94/107,772,078.96 = 42,813,999.15/x
  3. Step 3: Cross multiply
    78,097,399.94x = 107,772,078.96 × 42,813,999.15
  4. Step 4: Simplify right side
    78,097,399.94x = 4,614,153,696,987,172
  5. Step 5: Solve for x
    x = 4,614,153,696,987,172/78,097,399.94
  6. Step 6: Final answer
    x = 59,082,039.87

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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.