Home / 86,640,643.80-129,960,965.70-73,035,754.20

Finding the Fourth Proportional to 86,640,643.80, 129,960,965.70 and 73,035,754.20

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Solution

The fourth proportional to 86,640,643.80, 129,960,965.70 and 73,035,754.20 is: 109,553,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640,643.80 : 129,960,965.70 = 73,035,754.20 : x
  2. Step 2: Convert to fraction form
    86,640,643.80/129,960,965.70 = 73,035,754.20/x
  3. Step 3: Cross multiply
    86,640,643.80x = 129,960,965.70 × 73,035,754.20
  4. Step 4: Simplify right side
    86,640,643.80x = 9,491,797,146,459,832
  5. Step 5: Solve for x
    x = 9,491,797,146,459,832/86,640,643.80
  6. Step 6: Final answer
    x = 109,553,631.30

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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.