Home / 65,369.06-90,218.51-38,154.07

Finding the Fourth Proportional to 65,369.06, 90,218.51 and 38,154.07

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Solution

The fourth proportional to 65,369.06, 90,218.51 and 38,154.07 is: 52,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,369.06 : 90,218.51 = 38,154.07 : x
  2. Step 2: Convert to fraction form
    65,369.06/90,218.51 = 38,154.07/x
  3. Step 3: Cross multiply
    65,369.06x = 90,218.51 × 38,154.07
  4. Step 4: Simplify right side
    65,369.06x = 3,442,203,410.92
  5. Step 5: Solve for x
    x = 3,442,203,410.92/65,369.06
  6. Step 6: Final answer
    x = 52,657.99

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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.