Home / 86,948.42-130,398.53-30,781.13

Finding the Fourth Proportional to 86,948.42, 130,398.53 and 30,781.13

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Solution

The fourth proportional to 86,948.42, 130,398.53 and 30,781.13 is: 46,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,948.42 : 130,398.53 = 30,781.13 : x
  2. Step 2: Convert to fraction form
    86,948.42/130,398.53 = 30,781.13/x
  3. Step 3: Cross multiply
    86,948.42x = 130,398.53 × 30,781.13
  4. Step 4: Simplify right side
    86,948.42x = 4,013,813,297.84
  5. Step 5: Solve for x
    x = 4,013,813,297.84/86,948.42
  6. Step 6: Final answer
    x = 46,163.16

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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.