Home / 42,917.16-64,349.64-19,220.34

Finding the Fourth Proportional to 42,917.16, 64,349.64 and 19,220.34

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Solution

The fourth proportional to 42,917.16, 64,349.64 and 19,220.34 is: 28,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,917.16 : 64,349.64 = 19,220.34 : x
  2. Step 2: Convert to fraction form
    42,917.16/64,349.64 = 19,220.34/x
  3. Step 3: Cross multiply
    42,917.16x = 64,349.64 × 19,220.34
  4. Step 4: Simplify right side
    42,917.16x = 1,236,821,959.68
  5. Step 5: Solve for x
    x = 1,236,821,959.68/42,917.16
  6. Step 6: Final answer
    x = 28,818.82

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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.