Home / 81,459,008.70-122,188,513.05-30,330,447.90

Finding the Fourth Proportional to 81,459,008.70, 122,188,513.05 and 30,330,447.90

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Solution

The fourth proportional to 81,459,008.70, 122,188,513.05 and 30,330,447.90 is: 45,495,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,459,008.70 : 122,188,513.05 = 30,330,447.90 : x
  2. Step 2: Convert to fraction form
    81,459,008.70/122,188,513.05 = 30,330,447.90/x
  3. Step 3: Cross multiply
    81,459,008.70x = 122,188,513.05 × 30,330,447.90
  4. Step 4: Simplify right side
    81,459,008.70x = 3,706,032,329,041,495
  5. Step 5: Solve for x
    x = 3,706,032,329,041,495/81,459,008.70
  6. Step 6: Final answer
    x = 45,495,671.85

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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.