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Finding the Fourth Proportional to 70,992,981.60, 106,300,515.60 and 45,294,856.80

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Solution

The fourth proportional to 70,992,981.60, 106,300,515.60 and 45,294,856.80 is: 67,821,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,992,981.60 : 106,300,515.60 = 45,294,856.80 : x
  2. Step 2: Convert to fraction form
    70,992,981.60/106,300,515.60 = 45,294,856.80/x
  3. Step 3: Cross multiply
    70,992,981.60x = 106,300,515.60 × 45,294,856.80
  4. Step 4: Simplify right side
    70,992,981.60x = 4,814,866,631,868,165
  5. Step 5: Solve for x
    x = 4,814,866,631,868,165/70,992,981.60
  6. Step 6: Final answer
    x = 67,821,727.21

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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.