Home / 42,856.70-64,145.32-38,764.58

Finding the Fourth Proportional to 42,856.70, 64,145.32 and 38,764.58

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Solution

The fourth proportional to 42,856.70, 64,145.32 and 38,764.58 is: 58,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,856.70 : 64,145.32 = 38,764.58 : x
  2. Step 2: Convert to fraction form
    42,856.70/64,145.32 = 38,764.58/x
  3. Step 3: Cross multiply
    42,856.70x = 64,145.32 × 38,764.58
  4. Step 4: Simplify right side
    42,856.70x = 2,486,565,971.13
  5. Step 5: Solve for x
    x = 2,486,565,971.13/42,856.70
  6. Step 6: Final answer
    x = 58,020.48

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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.