Home / 42,961.68-64,455-19,263.96

Finding the Fourth Proportional to 42,961.68, 64,455 and 19,263.96

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Solution

The fourth proportional to 42,961.68, 64,455 and 19,263.96 is: 28,901.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,961.68 : 64,455 = 19,263.96 : x
  2. Step 2: Convert to fraction form
    42,961.68/64,455 = 19,263.96/x
  3. Step 3: Cross multiply
    42,961.68x = 64,455 × 19,263.96
  4. Step 4: Simplify right side
    42,961.68x = 1,241,658,541.80
  5. Step 5: Solve for x
    x = 1,241,658,541.80/42,961.68
  6. Step 6: Final answer
    x = 28,901.54

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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.