Home / 42,989.56-64,135.25-40,664.44

Finding the Fourth Proportional to 42,989.56, 64,135.25 and 40,664.44

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Solution

The fourth proportional to 42,989.56, 64,135.25 and 40,664.44 is: 60,666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,989.56 : 64,135.25 = 40,664.44 : x
  2. Step 2: Convert to fraction form
    42,989.56/64,135.25 = 40,664.44/x
  3. Step 3: Cross multiply
    42,989.56x = 64,135.25 × 40,664.44
  4. Step 4: Simplify right side
    42,989.56x = 2,608,023,501.51
  5. Step 5: Solve for x
    x = 2,608,023,501.51/42,989.56
  6. Step 6: Final answer
    x = 60,666.45

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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.