Home / 42,751.76-64,140.60-20,558.84

Finding the Fourth Proportional to 42,751.76, 64,140.60 and 20,558.84

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Solution

The fourth proportional to 42,751.76, 64,140.60 and 20,558.84 is: 30,844.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,751.76 : 64,140.60 = 20,558.84 : x
  2. Step 2: Convert to fraction form
    42,751.76/64,140.60 = 20,558.84/x
  3. Step 3: Cross multiply
    42,751.76x = 64,140.60 × 20,558.84
  4. Step 4: Simplify right side
    42,751.76x = 1,318,656,332.90
  5. Step 5: Solve for x
    x = 1,318,656,332.90/42,751.76
  6. Step 6: Final answer
    x = 30,844.49

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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.