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Finding the Fourth Proportional to 67,804.08, 101,707.08 and 21,054

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Solution

The fourth proportional to 67,804.08, 101,707.08 and 21,054 is: 31,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,804.08 : 101,707.08 = 21,054 : x
  2. Step 2: Convert to fraction form
    67,804.08/101,707.08 = 21,054/x
  3. Step 3: Cross multiply
    67,804.08x = 101,707.08 × 21,054
  4. Step 4: Simplify right side
    67,804.08x = 2,141,340,862.32
  5. Step 5: Solve for x
    x = 2,141,340,862.32/67,804.08
  6. Step 6: Final answer
    x = 31,581.30

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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.