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Finding the Fourth Proportional to 32,749.64, 45,208.71 and 20,661.00

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Solution

The fourth proportional to 32,749.64, 45,208.71 and 20,661.00 is: 28,521.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,749.64 : 45,208.71 = 20,661.00 : x
  2. Step 2: Convert to fraction form
    32,749.64/45,208.71 = 20,661.00/x
  3. Step 3: Cross multiply
    32,749.64x = 45,208.71 × 20,661.00
  4. Step 4: Simplify right side
    32,749.64x = 934,057,056.82
  5. Step 5: Solve for x
    x = 934,057,056.82/32,749.64
  6. Step 6: Final answer
    x = 28,521.14

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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.