Home / 86,412,116.48-129,631,067.07-31,820,506.79

Finding the Fourth Proportional to 86,412,116.48, 129,631,067.07 and 31,820,506.79

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Solution

The fourth proportional to 86,412,116.48, 129,631,067.07 and 31,820,506.79 is: 47,735,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,412,116.48 : 129,631,067.07 = 31,820,506.79 : x
  2. Step 2: Convert to fraction form
    86,412,116.48/129,631,067.07 = 31,820,506.79/x
  3. Step 3: Cross multiply
    86,412,116.48x = 129,631,067.07 × 31,820,506.79
  4. Step 4: Simplify right side
    86,412,116.48x = 4,124,926,249,247,725
  5. Step 5: Solve for x
    x = 4,124,926,249,247,725/86,412,116.48
  6. Step 6: Final answer
    x = 47,735,507.68

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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.