Home / 72,854.26-109,281.60-20,263.79

Finding the Fourth Proportional to 72,854.26, 109,281.60 and 20,263.79

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Solution

The fourth proportional to 72,854.26, 109,281.60 and 20,263.79 is: 30,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,854.26 : 109,281.60 = 20,263.79 : x
  2. Step 2: Convert to fraction form
    72,854.26/109,281.60 = 20,263.79/x
  3. Step 3: Cross multiply
    72,854.26x = 109,281.60 × 20,263.79
  4. Step 4: Simplify right side
    72,854.26x = 2,214,459,666.47
  5. Step 5: Solve for x
    x = 2,214,459,666.47/72,854.26
  6. Step 6: Final answer
    x = 30,395.75

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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.