Home / 81,651,621.60-122,477,432.40-67,479,861.60

Finding the Fourth Proportional to 81,651,621.60, 122,477,432.40 and 67,479,861.60

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Solution

The fourth proportional to 81,651,621.60, 122,477,432.40 and 67,479,861.60 is: 101,219,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,651,621.60 : 122,477,432.40 = 67,479,861.60 : x
  2. Step 2: Convert to fraction form
    81,651,621.60/122,477,432.40 = 67,479,861.60/x
  3. Step 3: Cross multiply
    81,651,621.60x = 122,477,432.40 × 67,479,861.60
  4. Step 4: Simplify right side
    81,651,621.60x = 8,264,760,187,475,356
  5. Step 5: Solve for x
    x = 8,264,760,187,475,356/81,651,621.60
  6. Step 6: Final answer
    x = 101,219,792.40

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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.