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Finding the Fourth Proportional to 66,230.16, 91,352.16 and 55,298.16

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Solution

The fourth proportional to 66,230.16, 91,352.16 and 55,298.16 is: 76,273.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,230.16 : 91,352.16 = 55,298.16 : x
  2. Step 2: Convert to fraction form
    66,230.16/91,352.16 = 55,298.16/x
  3. Step 3: Cross multiply
    66,230.16x = 91,352.16 × 55,298.16
  4. Step 4: Simplify right side
    66,230.16x = 5,051,606,360.03
  5. Step 5: Solve for x
    x = 5,051,606,360.03/66,230.16
  6. Step 6: Final answer
    x = 76,273.50

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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.