Home / 71,516,321.52-98,702,923.32-40,157,890.80

Finding the Fourth Proportional to 71,516,321.52, 98,702,923.32 and 40,157,890.80

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Solution

The fourth proportional to 71,516,321.52, 98,702,923.32 and 40,157,890.80 is: 55,423,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,516,321.52 : 98,702,923.32 = 40,157,890.80 : x
  2. Step 2: Convert to fraction form
    71,516,321.52/98,702,923.32 = 40,157,890.80/x
  3. Step 3: Cross multiply
    71,516,321.52x = 98,702,923.32 × 40,157,890.80
  4. Step 4: Simplify right side
    71,516,321.52x = 3,963,701,216,325,333
  5. Step 5: Solve for x
    x = 3,963,701,216,325,333/71,516,321.52
  6. Step 6: Final answer
    x = 55,423,728.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.