Home / 51,023.70-70,419-30,887.64

Finding the Fourth Proportional to 51,023.70, 70,419 and 30,887.64

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Solution

The fourth proportional to 51,023.70, 70,419 and 30,887.64 is: 42,628.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,023.70 : 70,419 = 30,887.64 : x
  2. Step 2: Convert to fraction form
    51,023.70/70,419 = 30,887.64/x
  3. Step 3: Cross multiply
    51,023.70x = 70,419 × 30,887.64
  4. Step 4: Simplify right side
    51,023.70x = 2,175,076,721.16
  5. Step 5: Solve for x
    x = 2,175,076,721.16/51,023.70
  6. Step 6: Final answer
    x = 42,628.75

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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.