Home / 85,954,383.79-128,850,525.45-42,782,774.15

Finding the Fourth Proportional to 85,954,383.79, 128,850,525.45 and 42,782,774.15

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Solution

The fourth proportional to 85,954,383.79, 128,850,525.45 and 42,782,774.15 is: 64,133,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954,383.79 : 128,850,525.45 = 42,782,774.15 : x
  2. Step 2: Convert to fraction form
    85,954,383.79/128,850,525.45 = 42,782,774.15/x
  3. Step 3: Cross multiply
    85,954,383.79x = 128,850,525.45 × 42,782,774.15
  4. Step 4: Simplify right side
    85,954,383.79x = 5,512,582,929,758,304
  5. Step 5: Solve for x
    x = 5,512,582,929,758,304/85,954,383.79
  6. Step 6: Final answer
    x = 64,133,819.44

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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.