Home / 80,879,332.40-121,318,998.60-66,518,615.60

Finding the Fourth Proportional to 80,879,332.40, 121,318,998.60 and 66,518,615.60

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Solution

The fourth proportional to 80,879,332.40, 121,318,998.60 and 66,518,615.60 is: 99,777,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879,332.40 : 121,318,998.60 = 66,518,615.60 : x
  2. Step 2: Convert to fraction form
    80,879,332.40/121,318,998.60 = 66,518,615.60/x
  3. Step 3: Cross multiply
    80,879,332.40x = 121,318,998.60 × 66,518,615.60
  4. Step 4: Simplify right side
    80,879,332.40x = 8,069,971,832,850,338
  5. Step 5: Solve for x
    x = 8,069,971,832,850,338/80,879,332.40
  6. Step 6: Final answer
    x = 99,777,923.40

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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.