Home / 65,916.80-98,875.20-18,531.80

Finding the Fourth Proportional to 65,916.80, 98,875.20 and 18,531.80

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Solution

The fourth proportional to 65,916.80, 98,875.20 and 18,531.80 is: 27,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,916.80 : 98,875.20 = 18,531.80 : x
  2. Step 2: Convert to fraction form
    65,916.80/98,875.20 = 18,531.80/x
  3. Step 3: Cross multiply
    65,916.80x = 98,875.20 × 18,531.80
  4. Step 4: Simplify right side
    65,916.80x = 1,832,335,431.36
  5. Step 5: Solve for x
    x = 1,832,335,431.36/65,916.80
  6. Step 6: Final answer
    x = 27,797.70

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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.