Home / 55,275.12-82,856.16-21,985.92

Finding the Fourth Proportional to 55,275.12, 82,856.16 and 21,985.92

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Solution

The fourth proportional to 55,275.12, 82,856.16 and 21,985.92 is: 32,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,275.12 : 82,856.16 = 21,985.92 : x
  2. Step 2: Convert to fraction form
    55,275.12/82,856.16 = 21,985.92/x
  3. Step 3: Cross multiply
    55,275.12x = 82,856.16 × 21,985.92
  4. Step 4: Simplify right side
    55,275.12x = 1,821,668,905.27
  5. Step 5: Solve for x
    x = 1,821,668,905.27/55,275.12
  6. Step 6: Final answer
    x = 32,956.40

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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.