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Finding the Fourth Proportional to 47,358.40, 65,363.06 and 28,239.41

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Solution

The fourth proportional to 47,358.40, 65,363.06 and 28,239.41 is: 38,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,358.40 : 65,363.06 = 28,239.41 : x
  2. Step 2: Convert to fraction form
    47,358.40/65,363.06 = 28,239.41/x
  3. Step 3: Cross multiply
    47,358.40x = 65,363.06 × 28,239.41
  4. Step 4: Simplify right side
    47,358.40x = 1,845,814,250.19
  5. Step 5: Solve for x
    x = 1,845,814,250.19/47,358.40
  6. Step 6: Final answer
    x = 38,975.44

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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.