Home / 42,761.60-64,140.96-19,371.68

Finding the Fourth Proportional to 42,761.60, 64,140.96 and 19,371.68

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Solution

The fourth proportional to 42,761.60, 64,140.96 and 19,371.68 is: 29,056.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,761.60 : 64,140.96 = 19,371.68 : x
  2. Step 2: Convert to fraction form
    42,761.60/64,140.96 = 19,371.68/x
  3. Step 3: Cross multiply
    42,761.60x = 64,140.96 × 19,371.68
  4. Step 4: Simplify right side
    42,761.60x = 1,242,518,152.01
  5. Step 5: Solve for x
    x = 1,242,518,152.01/42,761.60
  6. Step 6: Final answer
    x = 29,056.87

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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.