Home / 42,852.85-64,320.73-20,681.83

Finding the Fourth Proportional to 42,852.85, 64,320.73 and 20,681.83

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Solution

The fourth proportional to 42,852.85, 64,320.73 and 20,681.83 is: 31,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,852.85 : 64,320.73 = 20,681.83 : x
  2. Step 2: Convert to fraction form
    42,852.85/64,320.73 = 20,681.83/x
  3. Step 3: Cross multiply
    42,852.85x = 64,320.73 × 20,681.83
  4. Step 4: Simplify right side
    42,852.85x = 1,330,270,548.37
  5. Step 5: Solve for x
    x = 1,330,270,548.37/42,852.85
  6. Step 6: Final answer
    x = 31,042.76

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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.