Home / 66,159.77-91,314.92-40,688.06

Finding the Fourth Proportional to 66,159.77, 91,314.92 and 40,688.06

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Solution

The fourth proportional to 66,159.77, 91,314.92 and 40,688.06 is: 56,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.77 : 91,314.92 = 40,688.06 : x
  2. Step 2: Convert to fraction form
    66,159.77/91,314.92 = 40,688.06/x
  3. Step 3: Cross multiply
    66,159.77x = 91,314.92 × 40,688.06
  4. Step 4: Simplify right side
    66,159.77x = 3,715,426,589.00
  5. Step 5: Solve for x
    x = 3,715,426,589.00/66,159.77
  6. Step 6: Final answer
    x = 56,158.40

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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.