Home / 85,800,439.20-128,952,601.20-74,714,973.60

Finding the Fourth Proportional to 85,800,439.20, 128,952,601.20 and 74,714,973.60

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Solution

The fourth proportional to 85,800,439.20, 128,952,601.20 and 74,714,973.60 is: 112,291,851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800,439.20 : 128,952,601.20 = 74,714,973.60 : x
  2. Step 2: Convert to fraction form
    85,800,439.20/128,952,601.20 = 74,714,973.60/x
  3. Step 3: Cross multiply
    85,800,439.20x = 128,952,601.20 × 74,714,973.60
  4. Step 4: Simplify right side
    85,800,439.20x = 9,634,690,194,309,328
  5. Step 5: Solve for x
    x = 9,634,690,194,309,328/85,800,439.20
  6. Step 6: Final answer
    x = 112,291,851.70

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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.