Home / 66,587.85-91,867.32-39,358.19

Finding the Fourth Proportional to 66,587.85, 91,867.32 and 39,358.19

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Solution

The fourth proportional to 66,587.85, 91,867.32 and 39,358.19 is: 54,300.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,587.85 : 91,867.32 = 39,358.19 : x
  2. Step 2: Convert to fraction form
    66,587.85/91,867.32 = 39,358.19/x
  3. Step 3: Cross multiply
    66,587.85x = 91,867.32 × 39,358.19
  4. Step 4: Simplify right side
    66,587.85x = 3,615,731,665.02
  5. Step 5: Solve for x
    x = 3,615,731,665.02/66,587.85
  6. Step 6: Final answer
    x = 54,300.17

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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.