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Finding the Fourth Proportional to 60,653.36, 90,961.68 and 21,203.12

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Solution

The fourth proportional to 60,653.36, 90,961.68 and 21,203.12 is: 31,798.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,653.36 : 90,961.68 = 21,203.12 : x
  2. Step 2: Convert to fraction form
    60,653.36/90,961.68 = 21,203.12/x
  3. Step 3: Cross multiply
    60,653.36x = 90,961.68 × 21,203.12
  4. Step 4: Simplify right side
    60,653.36x = 1,928,671,416.44
  5. Step 5: Solve for x
    x = 1,928,671,416.44/60,653.36
  6. Step 6: Final answer
    x = 31,798.26

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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.