Home / 80,723,640.80-121,085,461.20-56,489,931.20

Finding the Fourth Proportional to 80,723,640.80, 121,085,461.20 and 56,489,931.20

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Solution

The fourth proportional to 80,723,640.80, 121,085,461.20 and 56,489,931.20 is: 84,734,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,723,640.80 : 121,085,461.20 = 56,489,931.20 : x
  2. Step 2: Convert to fraction form
    80,723,640.80/121,085,461.20 = 56,489,931.20/x
  3. Step 3: Cross multiply
    80,723,640.80x = 121,085,461.20 × 56,489,931.20
  4. Step 4: Simplify right side
    80,723,640.80x = 6,840,109,372,508,270
  5. Step 5: Solve for x
    x = 6,840,109,372,508,270/80,723,640.80
  6. Step 6: Final answer
    x = 84,734,896.80

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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.