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Finding the Fourth Proportional to 74,039.76, 111,068.28 and 74,039.76

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Solution

The fourth proportional to 74,039.76, 111,068.28 and 74,039.76 is: 111,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,039.76 : 111,068.28 = 74,039.76 : x
  2. Step 2: Convert to fraction form
    74,039.76/111,068.28 = 74,039.76/x
  3. Step 3: Cross multiply
    74,039.76x = 111,068.28 × 74,039.76
  4. Step 4: Simplify right side
    74,039.76x = 8,223,468,794.81
  5. Step 5: Solve for x
    x = 8,223,468,794.81/74,039.76
  6. Step 6: Final answer
    x = 111,068.28

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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.