Home / 58,143.12-87,206.44-18,695.20

Finding the Fourth Proportional to 58,143.12, 87,206.44 and 18,695.20

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Solution

The fourth proportional to 58,143.12, 87,206.44 and 18,695.20 is: 28,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,143.12 : 87,206.44 = 18,695.20 : x
  2. Step 2: Convert to fraction form
    58,143.12/87,206.44 = 18,695.20/x
  3. Step 3: Cross multiply
    58,143.12x = 87,206.44 × 18,695.20
  4. Step 4: Simplify right side
    58,143.12x = 1,630,341,837.09
  5. Step 5: Solve for x
    x = 1,630,341,837.09/58,143.12
  6. Step 6: Final answer
    x = 28,040.15

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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.