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Finding the Fourth Proportional to 66,476.80, 91,551.36 and 65,025.28

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Solution

The fourth proportional to 66,476.80, 91,551.36 and 65,025.28 is: 89,552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,476.80 : 91,551.36 = 65,025.28 : x
  2. Step 2: Convert to fraction form
    66,476.80/91,551.36 = 65,025.28/x
  3. Step 3: Cross multiply
    66,476.80x = 91,551.36 × 65,025.28
  4. Step 4: Simplify right side
    66,476.80x = 5,953,152,818.38
  5. Step 5: Solve for x
    x = 5,953,152,818.38/66,476.80
  6. Step 6: Final answer
    x = 89,552.34

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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.