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Finding the Fourth Proportional to 65,872.71, 98,811.77 and 19,125.59

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Solution

The fourth proportional to 65,872.71, 98,811.77 and 19,125.59 is: 28,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,872.71 : 98,811.77 = 19,125.59 : x
  2. Step 2: Convert to fraction form
    65,872.71/98,811.77 = 19,125.59/x
  3. Step 3: Cross multiply
    65,872.71x = 98,811.77 × 19,125.59
  4. Step 4: Simplify right side
    65,872.71x = 1,889,832,810.51
  5. Step 5: Solve for x
    x = 1,889,832,810.51/65,872.71
  6. Step 6: Final answer
    x = 28,689.16

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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.