Home / 79,712,917.80-119,569,376.70-78,957,090.60

Finding the Fourth Proportional to 79,712,917.80, 119,569,376.70 and 78,957,090.60

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Solution

The fourth proportional to 79,712,917.80, 119,569,376.70 and 78,957,090.60 is: 118,435,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,712,917.80 : 119,569,376.70 = 78,957,090.60 : x
  2. Step 2: Convert to fraction form
    79,712,917.80/119,569,376.70 = 78,957,090.60/x
  3. Step 3: Cross multiply
    79,712,917.80x = 119,569,376.70 × 78,957,090.60
  4. Step 4: Simplify right side
    79,712,917.80x = 9,440,850,109,087,428
  5. Step 5: Solve for x
    x = 9,440,850,109,087,428/79,712,917.80
  6. Step 6: Final answer
    x = 118,435,635.90

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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.