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Finding the Fourth Proportional to 67,376.32, 101,047.18 and 19,980.28

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Solution

The fourth proportional to 67,376.32, 101,047.18 and 19,980.28 is: 29,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,376.32 : 101,047.18 = 19,980.28 : x
  2. Step 2: Convert to fraction form
    67,376.32/101,047.18 = 19,980.28/x
  3. Step 3: Cross multiply
    67,376.32x = 101,047.18 × 19,980.28
  4. Step 4: Simplify right side
    67,376.32x = 2,018,950,949.61
  5. Step 5: Solve for x
    x = 2,018,950,949.61/67,376.32
  6. Step 6: Final answer
    x = 29,965.29

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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.