Home / 86,086,603.80-129,129,905.70-31,499,083.80

Finding the Fourth Proportional to 86,086,603.80, 129,129,905.70 and 31,499,083.80

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Solution

The fourth proportional to 86,086,603.80, 129,129,905.70 and 31,499,083.80 is: 47,248,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,086,603.80 : 129,129,905.70 = 31,499,083.80 : x
  2. Step 2: Convert to fraction form
    86,086,603.80/129,129,905.70 = 31,499,083.80/x
  3. Step 3: Cross multiply
    86,086,603.80x = 129,129,905.70 × 31,499,083.80
  4. Step 4: Simplify right side
    86,086,603.80x = 4,067,473,720,730,398
  5. Step 5: Solve for x
    x = 4,067,473,720,730,398/86,086,603.80
  6. Step 6: Final answer
    x = 47,248,625.70

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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.