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Finding the Fourth Proportional to 90,604,819.60, 135,954,468.60 and 39,492,005.20

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Solution

The fourth proportional to 90,604,819.60, 135,954,468.60 and 39,492,005.20 is: 59,258,597.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,604,819.60 : 135,954,468.60 = 39,492,005.20 : x
  2. Step 2: Convert to fraction form
    90,604,819.60/135,954,468.60 = 39,492,005.20/x
  3. Step 3: Cross multiply
    90,604,819.60x = 135,954,468.60 × 39,492,005.20
  4. Step 4: Simplify right side
    90,604,819.60x = 5,369,114,580,914,437
  5. Step 5: Solve for x
    x = 5,369,114,580,914,437/90,604,819.60
  6. Step 6: Final answer
    x = 59,258,597.99

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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.