Home / 53,111.16-79,680.38-15,669.72

Finding the Fourth Proportional to 53,111.16, 79,680.38 and 15,669.72

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Solution

The fourth proportional to 53,111.16, 79,680.38 and 15,669.72 is: 23,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,111.16 : 79,680.38 = 15,669.72 : x
  2. Step 2: Convert to fraction form
    53,111.16/79,680.38 = 15,669.72/x
  3. Step 3: Cross multiply
    53,111.16x = 79,680.38 × 15,669.72
  4. Step 4: Simplify right side
    53,111.16x = 1,248,569,165.75
  5. Step 5: Solve for x
    x = 1,248,569,165.75/53,111.16
  6. Step 6: Final answer
    x = 23,508.60

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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.