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Finding the Fourth Proportional to 66,017.82, 91,156.92 and 60,980.16

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Solution

The fourth proportional to 66,017.82, 91,156.92 and 60,980.16 is: 84,200.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,017.82 : 91,156.92 = 60,980.16 : x
  2. Step 2: Convert to fraction form
    66,017.82/91,156.92 = 60,980.16/x
  3. Step 3: Cross multiply
    66,017.82x = 91,156.92 × 60,980.16
  4. Step 4: Simplify right side
    66,017.82x = 5,558,763,566.71
  5. Step 5: Solve for x
    x = 5,558,763,566.71/66,017.82
  6. Step 6: Final answer
    x = 84,200.96

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1.5x scale

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.