Home / 99,521.64-137,352.42-57,079.26

Finding the Fourth Proportional to 99,521.64, 137,352.42 and 57,079.26

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Solution

The fourth proportional to 99,521.64, 137,352.42 and 57,079.26 is: 78,776.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,521.64 : 137,352.42 = 57,079.26 : x
  2. Step 2: Convert to fraction form
    99,521.64/137,352.42 = 57,079.26/x
  3. Step 3: Cross multiply
    99,521.64x = 137,352.42 × 57,079.26
  4. Step 4: Simplify right side
    99,521.64x = 7,839,974,492.81
  5. Step 5: Solve for x
    x = 7,839,974,492.81/99,521.64
  6. Step 6: Final answer
    x = 78,776.58

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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.