Home / 69,018,145.20-103,401,246.60-42,060,308.40

Finding the Fourth Proportional to 69,018,145.20, 103,401,246.60 and 42,060,308.40

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Solution

The fourth proportional to 69,018,145.20, 103,401,246.60 and 42,060,308.40 is: 63,013,694.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,018,145.20 : 103,401,246.60 = 42,060,308.40 : x
  2. Step 2: Convert to fraction form
    69,018,145.20/103,401,246.60 = 42,060,308.40/x
  3. Step 3: Cross multiply
    69,018,145.20x = 103,401,246.60 × 42,060,308.40
  4. Step 4: Simplify right side
    69,018,145.20x = 4,349,088,320,940,451
  5. Step 5: Solve for x
    x = 4,349,088,320,940,451/69,018,145.20
  6. Step 6: Final answer
    x = 63,013,694.56

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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.