Home / 80,669,439.60-121,004,159.40-66,497,679.60

Finding the Fourth Proportional to 80,669,439.60, 121,004,159.40 and 66,497,679.60

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Solution

The fourth proportional to 80,669,439.60, 121,004,159.40 and 66,497,679.60 is: 99,746,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,669,439.60 : 121,004,159.40 = 66,497,679.60 : x
  2. Step 2: Convert to fraction form
    80,669,439.60/121,004,159.40 = 66,497,679.60/x
  3. Step 3: Cross multiply
    80,669,439.60x = 121,004,159.40 × 66,497,679.60
  4. Step 4: Simplify right side
    80,669,439.60x = 8,046,495,822,048,529
  5. Step 5: Solve for x
    x = 8,046,495,822,048,529/80,669,439.60
  6. Step 6: Final answer
    x = 99,746,519.40

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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.