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Finding the Fourth Proportional to 65,666.56, 90,619.68 and 35,858.56

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Solution

The fourth proportional to 65,666.56, 90,619.68 and 35,858.56 is: 49,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,666.56 : 90,619.68 = 35,858.56 : x
  2. Step 2: Convert to fraction form
    65,666.56/90,619.68 = 35,858.56/x
  3. Step 3: Cross multiply
    65,666.56x = 90,619.68 × 35,858.56
  4. Step 4: Simplify right side
    65,666.56x = 3,249,491,232.46
  5. Step 5: Solve for x
    x = 3,249,491,232.46/65,666.56
  6. Step 6: Final answer
    x = 49,484.72

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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.