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Finding the Fourth Proportional to 68,700,090.30, 103,050,135.45 and 65,340,858.30

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Solution

The fourth proportional to 68,700,090.30, 103,050,135.45 and 65,340,858.30 is: 98,011,287.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,700,090.30 : 103,050,135.45 = 65,340,858.30 : x
  2. Step 2: Convert to fraction form
    68,700,090.30/103,050,135.45 = 65,340,858.30/x
  3. Step 3: Cross multiply
    68,700,090.30x = 103,050,135.45 × 65,340,858.30
  4. Step 4: Simplify right side
    68,700,090.30x = 6,733,384,298,234,257
  5. Step 5: Solve for x
    x = 6,733,384,298,234,257/68,700,090.30
  6. Step 6: Final answer
    x = 98,011,287.45

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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.