Home / 65,135.20-89,881.68-43,943.20

Finding the Fourth Proportional to 65,135.20, 89,881.68 and 43,943.20

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Solution

The fourth proportional to 65,135.20, 89,881.68 and 43,943.20 is: 60,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,135.20 : 89,881.68 = 43,943.20 : x
  2. Step 2: Convert to fraction form
    65,135.20/89,881.68 = 43,943.20/x
  3. Step 3: Cross multiply
    65,135.20x = 89,881.68 × 43,943.20
  4. Step 4: Simplify right side
    65,135.20x = 3,949,688,640.58
  5. Step 5: Solve for x
    x = 3,949,688,640.58/65,135.20
  6. Step 6: Final answer
    x = 60,638.31

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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.