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Finding the Fourth Proportional to 64,815.32, 89,445.16 and 35,007.32

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Solution

The fourth proportional to 64,815.32, 89,445.16 and 35,007.32 is: 48,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,815.32 : 89,445.16 = 35,007.32 : x
  2. Step 2: Convert to fraction form
    64,815.32/89,445.16 = 35,007.32/x
  3. Step 3: Cross multiply
    64,815.32x = 89,445.16 × 35,007.32
  4. Step 4: Simplify right side
    64,815.32x = 3,131,235,338.57
  5. Step 5: Solve for x
    x = 3,131,235,338.57/64,815.32
  6. Step 6: Final answer
    x = 48,310.11

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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.