Home / 65,848.15-90,871.73-38,980.86

Finding the Fourth Proportional to 65,848.15, 90,871.73 and 38,980.86

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Solution

The fourth proportional to 65,848.15, 90,871.73 and 38,980.86 is: 53,794.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,848.15 : 90,871.73 = 38,980.86 : x
  2. Step 2: Convert to fraction form
    65,848.15/90,871.73 = 38,980.86/x
  3. Step 3: Cross multiply
    65,848.15x = 90,871.73 × 38,980.86
  4. Step 4: Simplify right side
    65,848.15x = 3,542,258,185.09
  5. Step 5: Solve for x
    x = 3,542,258,185.09/65,848.15
  6. Step 6: Final answer
    x = 53,794.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.