Home / 65,916.48-98,880-19,169.28

Finding the Fourth Proportional to 65,916.48, 98,880 and 19,169.28

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Solution

The fourth proportional to 65,916.48, 98,880 and 19,169.28 is: 28,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,916.48 : 98,880 = 19,169.28 : x
  2. Step 2: Convert to fraction form
    65,916.48/98,880 = 19,169.28/x
  3. Step 3: Cross multiply
    65,916.48x = 98,880 × 19,169.28
  4. Step 4: Simplify right side
    65,916.48x = 1,895,458,406.40
  5. Step 5: Solve for x
    x = 1,895,458,406.40/65,916.48
  6. Step 6: Final answer
    x = 28,755.46

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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.