Home / 42,863.10-64,252.12-21,740.32

Finding the Fourth Proportional to 42,863.10, 64,252.12 and 21,740.32

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Solution

The fourth proportional to 42,863.10, 64,252.12 and 21,740.32 is: 32,588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,863.10 : 64,252.12 = 21,740.32 : x
  2. Step 2: Convert to fraction form
    42,863.10/64,252.12 = 21,740.32/x
  3. Step 3: Cross multiply
    42,863.10x = 64,252.12 × 21,740.32
  4. Step 4: Simplify right side
    42,863.10x = 1,396,861,649.48
  5. Step 5: Solve for x
    x = 1,396,861,649.48/42,863.10
  6. Step 6: Final answer
    x = 32,588.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.