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Finding the Fourth Proportional to 73,378.80, 110,068.20 and 38,310.30

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Solution

The fourth proportional to 73,378.80, 110,068.20 and 38,310.30 is: 57,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,378.80 : 110,068.20 = 38,310.30 : x
  2. Step 2: Convert to fraction form
    73,378.80/110,068.20 = 38,310.30/x
  3. Step 3: Cross multiply
    73,378.80x = 110,068.20 × 38,310.30
  4. Step 4: Simplify right side
    73,378.80x = 4,216,745,762.46
  5. Step 5: Solve for x
    x = 4,216,745,762.46/73,378.80
  6. Step 6: Final answer
    x = 57,465.45

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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.