Home / 66,971.12-92,423.04-40,118

Finding the Fourth Proportional to 66,971.12, 92,423.04 and 40,118

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Solution

The fourth proportional to 66,971.12, 92,423.04 and 40,118 is: 55,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,971.12 : 92,423.04 = 40,118 : x
  2. Step 2: Convert to fraction form
    66,971.12/92,423.04 = 40,118/x
  3. Step 3: Cross multiply
    66,971.12x = 92,423.04 × 40,118
  4. Step 4: Simplify right side
    66,971.12x = 3,707,827,518.72
  5. Step 5: Solve for x
    x = 3,707,827,518.72/66,971.12
  6. Step 6: Final answer
    x = 55,364.57

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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.