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Finding the Fourth Proportional to 42,775.70, 64,004.63 and 26,906.63

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Solution

The fourth proportional to 42,775.70, 64,004.63 and 26,906.63 is: 40,259.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,775.70 : 64,004.63 = 26,906.63 : x
  2. Step 2: Convert to fraction form
    42,775.70/64,004.63 = 26,906.63/x
  3. Step 3: Cross multiply
    42,775.70x = 64,004.63 × 26,906.63
  4. Step 4: Simplify right side
    42,775.70x = 1,722,148,443.14
  5. Step 5: Solve for x
    x = 1,722,148,443.14/42,775.70
  6. Step 6: Final answer
    x = 40,259.98

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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.