Home / 89,109.71-122,971.37-53,308.13

Finding the Fourth Proportional to 89,109.71, 122,971.37 and 53,308.13

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Solution

The fourth proportional to 89,109.71, 122,971.37 and 53,308.13 is: 73,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,109.71 : 122,971.37 = 53,308.13 : x
  2. Step 2: Convert to fraction form
    89,109.71/122,971.37 = 53,308.13/x
  3. Step 3: Cross multiply
    89,109.71x = 122,971.37 × 53,308.13
  4. Step 4: Simplify right side
    89,109.71x = 6,555,372,896.84
  5. Step 5: Solve for x
    x = 6,555,372,896.84/89,109.71
  6. Step 6: Final answer
    x = 73,565.20

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1.5x scale

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.