Home / 87,923.78-121,335.07-47,637.34

Finding the Fourth Proportional to 87,923.78, 121,335.07 and 47,637.34

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Solution

The fourth proportional to 87,923.78, 121,335.07 and 47,637.34 is: 65,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,923.78 : 121,335.07 = 47,637.34 : x
  2. Step 2: Convert to fraction form
    87,923.78/121,335.07 = 47,637.34/x
  3. Step 3: Cross multiply
    87,923.78x = 121,335.07 × 47,637.34
  4. Step 4: Simplify right side
    87,923.78x = 5,780,079,983.51
  5. Step 5: Solve for x
    x = 5,780,079,983.51/87,923.78
  6. Step 6: Final answer
    x = 65,739.67

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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.