Home / 78,161,142.40-117,220,718.40-32,713,532.80

Finding the Fourth Proportional to 78,161,142.40, 117,220,718.40 and 32,713,532.80

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Solution

The fourth proportional to 78,161,142.40, 117,220,718.40 and 32,713,532.80 is: 49,061,511.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161,142.40 : 117,220,718.40 = 32,713,532.80 : x
  2. Step 2: Convert to fraction form
    78,161,142.40/117,220,718.40 = 32,713,532.80/x
  3. Step 3: Cross multiply
    78,161,142.40x = 117,220,718.40 × 32,713,532.80
  4. Step 4: Simplify right side
    78,161,142.40x = 3,834,703,816,217,964
  5. Step 5: Solve for x
    x = 3,834,703,816,217,964/78,161,142.40
  6. Step 6: Final answer
    x = 49,061,511.88

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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.