Home / 90,739,712.70-136,109,569.05-30,155,438.70

Finding the Fourth Proportional to 90,739,712.70, 136,109,569.05 and 30,155,438.70

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Solution

The fourth proportional to 90,739,712.70, 136,109,569.05 and 30,155,438.70 is: 45,233,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739,712.70 : 136,109,569.05 = 30,155,438.70 : x
  2. Step 2: Convert to fraction form
    90,739,712.70/136,109,569.05 = 30,155,438.70/x
  3. Step 3: Cross multiply
    90,739,712.70x = 136,109,569.05 × 30,155,438.70
  4. Step 4: Simplify right side
    90,739,712.70x = 4,104,443,765,970,692.50
  5. Step 5: Solve for x
    x = 4,104,443,765,970,692.50/90,739,712.70
  6. Step 6: Final answer
    x = 45,233,158.05

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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.