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Finding the Fourth Proportional to 75,690.56, 104,453.76 and 47,412.88

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Solution

The fourth proportional to 75,690.56, 104,453.76 and 47,412.88 is: 65,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,690.56 : 104,453.76 = 47,412.88 : x
  2. Step 2: Convert to fraction form
    75,690.56/104,453.76 = 47,412.88/x
  3. Step 3: Cross multiply
    75,690.56x = 104,453.76 × 47,412.88
  4. Step 4: Simplify right side
    75,690.56x = 4,952,453,588.43
  5. Step 5: Solve for x
    x = 4,952,453,588.43/75,690.56
  6. Step 6: Final answer
    x = 65,430.27

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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.