Home / 78,732,679.05-118,099,018.58-67,962,141.45

Finding the Fourth Proportional to 78,732,679.05, 118,099,018.58 and 67,962,141.45

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Solution

The fourth proportional to 78,732,679.05, 118,099,018.58 and 67,962,141.45 is: 101,943,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,679.05 : 118,099,018.58 = 67,962,141.45 : x
  2. Step 2: Convert to fraction form
    78,732,679.05/118,099,018.58 = 67,962,141.45/x
  3. Step 3: Cross multiply
    78,732,679.05x = 118,099,018.58 × 67,962,141.45
  4. Step 4: Simplify right side
    78,732,679.05x = 8,026,262,205,500,328
  5. Step 5: Solve for x
    x = 8,026,262,205,500,328/78,732,679.05
  6. Step 6: Final answer
    x = 101,943,212.18

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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.