Home / 78,835,103.02-108,002,289.80-75,887,683.12

Finding the Fourth Proportional to 78,835,103.02, 108,002,289.80 and 75,887,683.12

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Solution

The fourth proportional to 78,835,103.02, 108,002,289.80 and 75,887,683.12 is: 103,964,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835,103.02 : 108,002,289.80 = 75,887,683.12 : x
  2. Step 2: Convert to fraction form
    78,835,103.02/108,002,289.80 = 75,887,683.12/x
  3. Step 3: Cross multiply
    78,835,103.02x = 108,002,289.80 × 75,887,683.12
  4. Step 4: Simplify right side
    78,835,103.02x = 8,196,043,544,576,808
  5. Step 5: Solve for x
    x = 8,196,043,544,576,808/78,835,103.02
  6. Step 6: Final answer
    x = 103,964,391.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.