Home / 98,427.43-135,834.27-55,421.71

Finding the Fourth Proportional to 98,427.43, 135,834.27 and 55,421.71

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Solution

The fourth proportional to 98,427.43, 135,834.27 and 55,421.71 is: 76,484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,427.43 : 135,834.27 = 55,421.71 : x
  2. Step 2: Convert to fraction form
    98,427.43/135,834.27 = 55,421.71/x
  3. Step 3: Cross multiply
    98,427.43x = 135,834.27 × 55,421.71
  4. Step 4: Simplify right side
    98,427.43x = 7,528,167,520.00
  5. Step 5: Solve for x
    x = 7,528,167,520.00/98,427.43
  6. Step 6: Final answer
    x = 76,484.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.