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Finding the Fourth Proportional to 64,775.64, 89,389.99 and 36,490.44

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Solution

The fourth proportional to 64,775.64, 89,389.99 and 36,490.44 is: 50,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,775.64 : 89,389.99 = 36,490.44 : x
  2. Step 2: Convert to fraction form
    64,775.64/89,389.99 = 36,490.44/x
  3. Step 3: Cross multiply
    64,775.64x = 89,389.99 × 36,490.44
  4. Step 4: Simplify right side
    64,775.64x = 3,261,880,066.70
  5. Step 5: Solve for x
    x = 3,261,880,066.70/64,775.64
  6. Step 6: Final answer
    x = 50,356.59

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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.