Home / 87,242.37-120,395.55-51,430.23

Finding the Fourth Proportional to 87,242.37, 120,395.55 and 51,430.23

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Solution

The fourth proportional to 87,242.37, 120,395.55 and 51,430.23 is: 70,974.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,242.37 : 120,395.55 = 51,430.23 : x
  2. Step 2: Convert to fraction form
    87,242.37/120,395.55 = 51,430.23/x
  3. Step 3: Cross multiply
    87,242.37x = 120,395.55 × 51,430.23
  4. Step 4: Simplify right side
    87,242.37x = 6,191,970,827.48
  5. Step 5: Solve for x
    x = 6,191,970,827.48/87,242.37
  6. Step 6: Final answer
    x = 70,974.35

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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.