Home / 78,250.11-117,356.01-42,673.08

Finding the Fourth Proportional to 78,250.11, 117,356.01 and 42,673.08

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Solution

The fourth proportional to 78,250.11, 117,356.01 and 42,673.08 is: 63,999.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,250.11 : 117,356.01 = 42,673.08 : x
  2. Step 2: Convert to fraction form
    78,250.11/117,356.01 = 42,673.08/x
  3. Step 3: Cross multiply
    78,250.11x = 117,356.01 × 42,673.08
  4. Step 4: Simplify right side
    78,250.11x = 5,007,942,403.21
  5. Step 5: Solve for x
    x = 5,007,942,403.21/78,250.11
  6. Step 6: Final answer
    x = 63,999.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.