Home / 85,308.36-127,981.26-26,148.48

Finding the Fourth Proportional to 85,308.36, 127,981.26 and 26,148.48

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Solution

The fourth proportional to 85,308.36, 127,981.26 and 26,148.48 is: 39,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.36 : 127,981.26 = 26,148.48 : x
  2. Step 2: Convert to fraction form
    85,308.36/127,981.26 = 26,148.48/x
  3. Step 3: Cross multiply
    85,308.36x = 127,981.26 × 26,148.48
  4. Step 4: Simplify right side
    85,308.36x = 3,346,515,417.48
  5. Step 5: Solve for x
    x = 3,346,515,417.48/85,308.36
  6. Step 6: Final answer
    x = 39,228.46

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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.