Home / 72,770,601.40-108,903,959.70-66,723,983.80

Finding the Fourth Proportional to 72,770,601.40, 108,903,959.70 and 66,723,983.80

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Solution

The fourth proportional to 72,770,601.40, 108,903,959.70 and 66,723,983.80 is: 99,854,967.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,770,601.40 : 108,903,959.70 = 66,723,983.80 : x
  2. Step 2: Convert to fraction form
    72,770,601.40/108,903,959.70 = 66,723,983.80/x
  3. Step 3: Cross multiply
    72,770,601.40x = 108,903,959.70 × 66,723,983.80
  4. Step 4: Simplify right side
    72,770,601.40x = 7,266,506,042,778,653
  5. Step 5: Solve for x
    x = 7,266,506,042,778,653/72,770,601.40
  6. Step 6: Final answer
    x = 99,854,967.57

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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.