Home / 85,954,530.19-128,850,745.03-42,782,920.55

Finding the Fourth Proportional to 85,954,530.19, 128,850,745.03 and 42,782,920.55

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Solution

The fourth proportional to 85,954,530.19, 128,850,745.03 and 42,782,920.55 is: 64,134,038.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954,530.19 : 128,850,745.03 = 42,782,920.55 : x
  2. Step 2: Convert to fraction form
    85,954,530.19/128,850,745.03 = 42,782,920.55/x
  3. Step 3: Cross multiply
    85,954,530.19x = 128,850,745.03 × 42,782,920.55
  4. Step 4: Simplify right side
    85,954,530.19x = 5,512,611,187,641,967
  5. Step 5: Solve for x
    x = 5,512,611,187,641,967/85,954,530.19
  6. Step 6: Final answer
    x = 64,134,038.96

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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.