Home / 66,160.77-91,316.30-40,689.06

Finding the Fourth Proportional to 66,160.77, 91,316.30 and 40,689.06

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Solution

The fourth proportional to 66,160.77, 91,316.30 and 40,689.06 is: 56,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,160.77 : 91,316.30 = 40,689.06 : x
  2. Step 2: Convert to fraction form
    66,160.77/91,316.30 = 40,689.06/x
  3. Step 3: Cross multiply
    66,160.77x = 91,316.30 × 40,689.06
  4. Step 4: Simplify right side
    66,160.77x = 3,715,574,409.68
  5. Step 5: Solve for x
    x = 3,715,574,409.68/66,160.77
  6. Step 6: Final answer
    x = 56,159.78

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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.