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Finding the Fourth Proportional to 67,970,429.10, 101,955,643.65 and 19,449,865.80

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Solution

The fourth proportional to 67,970,429.10, 101,955,643.65 and 19,449,865.80 is: 29,174,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,970,429.10 : 101,955,643.65 = 19,449,865.80 : x
  2. Step 2: Convert to fraction form
    67,970,429.10/101,955,643.65 = 19,449,865.80/x
  3. Step 3: Cross multiply
    67,970,429.10x = 101,955,643.65 × 19,449,865.80
  4. Step 4: Simplify right side
    67,970,429.10x = 1,983,023,586,545,122.25
  5. Step 5: Solve for x
    x = 1,983,023,586,545,122.25/67,970,429.10
  6. Step 6: Final answer
    x = 29,174,798.70

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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.