Home / 107,869.16-161,746.71-47,871.56

Finding the Fourth Proportional to 107,869.16, 161,746.71 and 47,871.56

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Solution

The fourth proportional to 107,869.16, 161,746.71 and 47,871.56 is: 71,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,869.16 : 161,746.71 = 47,871.56 : x
  2. Step 2: Convert to fraction form
    107,869.16/161,746.71 = 47,871.56/x
  3. Step 3: Cross multiply
    107,869.16x = 161,746.71 × 47,871.56
  4. Step 4: Simplify right side
    107,869.16x = 7,743,066,523.83
  5. Step 5: Solve for x
    x = 7,743,066,523.83/107,869.16
  6. Step 6: Final answer
    x = 71,782.03

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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.