Home / 42,966.78-64,439.01-28,918.86

Finding the Fourth Proportional to 42,966.78, 64,439.01 and 28,918.86

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Solution

The fourth proportional to 42,966.78, 64,439.01 and 28,918.86 is: 43,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,966.78 : 64,439.01 = 28,918.86 : x
  2. Step 2: Convert to fraction form
    42,966.78/64,439.01 = 28,918.86/x
  3. Step 3: Cross multiply
    42,966.78x = 64,439.01 × 28,918.86
  4. Step 4: Simplify right side
    42,966.78x = 1,863,502,708.73
  5. Step 5: Solve for x
    x = 1,863,502,708.73/42,966.78
  6. Step 6: Final answer
    x = 43,370.78

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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.