Home / 98,208.84-135,521.55-57,920.64

Finding the Fourth Proportional to 98,208.84, 135,521.55 and 57,920.64

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Solution

The fourth proportional to 98,208.84, 135,521.55 and 57,920.64 is: 79,926.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,208.84 : 135,521.55 = 57,920.64 : x
  2. Step 2: Convert to fraction form
    98,208.84/135,521.55 = 57,920.64/x
  3. Step 3: Cross multiply
    98,208.84x = 135,521.55 × 57,920.64
  4. Step 4: Simplify right side
    98,208.84x = 7,849,494,909.79
  5. Step 5: Solve for x
    x = 7,849,494,909.79/98,208.84
  6. Step 6: Final answer
    x = 79,926.56

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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.