Home / 260,079.09-390,083.27-70,551.65

Finding the Fourth Proportional to 260,079.09, 390,083.27 and 70,551.65

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Solution

The fourth proportional to 260,079.09, 390,083.27 and 70,551.65 is: 105,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079.09 : 390,083.27 = 70,551.65 : x
  2. Step 2: Convert to fraction form
    260,079.09/390,083.27 = 70,551.65/x
  3. Step 3: Cross multiply
    260,079.09x = 390,083.27 × 70,551.65
  4. Step 4: Simplify right side
    260,079.09x = 27,521,016,032.72
  5. Step 5: Solve for x
    x = 27,521,016,032.72/260,079.09
  6. Step 6: Final answer
    x = 105,817.87

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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.