Home / 64,645.76-89,236.56-40,767.68

Finding the Fourth Proportional to 64,645.76, 89,236.56 and 40,767.68

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Solution

The fourth proportional to 64,645.76, 89,236.56 and 40,767.68 is: 56,275.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,645.76 : 89,236.56 = 40,767.68 : x
  2. Step 2: Convert to fraction form
    64,645.76/89,236.56 = 40,767.68/x
  3. Step 3: Cross multiply
    64,645.76x = 89,236.56 × 40,767.68
  4. Step 4: Simplify right side
    64,645.76x = 3,637,967,522.38
  5. Step 5: Solve for x
    x = 3,637,967,522.38/64,645.76
  6. Step 6: Final answer
    x = 56,275.42

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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.