Home / 76,903,691.40-115,355,537.10-71,064,433.80

Finding the Fourth Proportional to 76,903,691.40, 115,355,537.10 and 71,064,433.80

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Solution

The fourth proportional to 76,903,691.40, 115,355,537.10 and 71,064,433.80 is: 106,596,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,903,691.40 : 115,355,537.10 = 71,064,433.80 : x
  2. Step 2: Convert to fraction form
    76,903,691.40/115,355,537.10 = 71,064,433.80/x
  3. Step 3: Cross multiply
    76,903,691.40x = 115,355,537.10 × 71,064,433.80
  4. Step 4: Simplify right side
    76,903,691.40x = 8,197,675,929,706,393
  5. Step 5: Solve for x
    x = 8,197,675,929,706,393/76,903,691.40
  6. Step 6: Final answer
    x = 106,596,650.70

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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.