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Finding the Fourth Proportional to 74,500.57, 102,810.78 and 40,966.57

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Solution

The fourth proportional to 74,500.57, 102,810.78 and 40,966.57 is: 56,533.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,500.57 : 102,810.78 = 40,966.57 : x
  2. Step 2: Convert to fraction form
    74,500.57/102,810.78 = 40,966.57/x
  3. Step 3: Cross multiply
    74,500.57x = 102,810.78 × 40,966.57
  4. Step 4: Simplify right side
    74,500.57x = 4,211,805,015.62
  5. Step 5: Solve for x
    x = 4,211,805,015.62/74,500.57
  6. Step 6: Final answer
    x = 56,533.86

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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.