Home / 98,517.25-135,953.96-56,075.78

Finding the Fourth Proportional to 98,517.25, 135,953.96 and 56,075.78

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Solution

The fourth proportional to 98,517.25, 135,953.96 and 56,075.78 is: 77,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,517.25 : 135,953.96 = 56,075.78 : x
  2. Step 2: Convert to fraction form
    98,517.25/135,953.96 = 56,075.78/x
  3. Step 3: Cross multiply
    98,517.25x = 135,953.96 × 56,075.78
  4. Step 4: Simplify right side
    98,517.25x = 7,623,724,351.09
  5. Step 5: Solve for x
    x = 7,623,724,351.09/98,517.25
  6. Step 6: Final answer
    x = 77,384.66

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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.