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Finding the Fourth Proportional to 48,378.60, 71,982.54 and 47,173.32

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Solution

The fourth proportional to 48,378.60, 71,982.54 and 47,173.32 is: 70,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,378.60 : 71,982.54 = 47,173.32 : x
  2. Step 2: Convert to fraction form
    48,378.60/71,982.54 = 47,173.32/x
  3. Step 3: Cross multiply
    48,378.60x = 71,982.54 × 47,173.32
  4. Step 4: Simplify right side
    48,378.60x = 3,395,655,393.83
  5. Step 5: Solve for x
    x = 3,395,655,393.83/48,378.60
  6. Step 6: Final answer
    x = 70,189.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.