Home / 67,828.10-101,778.60-28,389.20

Finding the Fourth Proportional to 67,828.10, 101,778.60 and 28,389.20

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Solution

The fourth proportional to 67,828.10, 101,778.60 and 28,389.20 is: 42,599.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,828.10 : 101,778.60 = 28,389.20 : x
  2. Step 2: Convert to fraction form
    67,828.10/101,778.60 = 28,389.20/x
  3. Step 3: Cross multiply
    67,828.10x = 101,778.60 × 28,389.20
  4. Step 4: Simplify right side
    67,828.10x = 2,889,413,031.12
  5. Step 5: Solve for x
    x = 2,889,413,031.12/67,828.10
  6. Step 6: Final answer
    x = 42,599.06

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1.5x scale

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.