Home / 64,721.20-89,342.80-43,512.76

Finding the Fourth Proportional to 64,721.20, 89,342.80 and 43,512.76

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Solution

The fourth proportional to 64,721.20, 89,342.80 and 43,512.76 is: 60,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,721.20 : 89,342.80 = 43,512.76 : x
  2. Step 2: Convert to fraction form
    64,721.20/89,342.80 = 43,512.76/x
  3. Step 3: Cross multiply
    64,721.20x = 89,342.80 × 43,512.76
  4. Step 4: Simplify right side
    64,721.20x = 3,887,551,814.13
  5. Step 5: Solve for x
    x = 3,887,551,814.13/64,721.20
  6. Step 6: Final answer
    x = 60,066.13

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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.