Home / 65,370.06-90,219.89-38,155.07

Finding the Fourth Proportional to 65,370.06, 90,219.89 and 38,155.07

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Solution

The fourth proportional to 65,370.06, 90,219.89 and 38,155.07 is: 52,659.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,370.06 : 90,219.89 = 38,155.07 : x
  2. Step 2: Convert to fraction form
    65,370.06/90,219.89 = 38,155.07/x
  3. Step 3: Cross multiply
    65,370.06x = 90,219.89 × 38,155.07
  4. Step 4: Simplify right side
    65,370.06x = 3,442,346,218.34
  5. Step 5: Solve for x
    x = 3,442,346,218.34/65,370.06
  6. Step 6: Final answer
    x = 52,659.37

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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.