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Finding the Fourth Proportional to 85,357.44, 117,781.56 and 47,624.40

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Solution

The fourth proportional to 85,357.44, 117,781.56 and 47,624.40 is: 65,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,357.44 : 117,781.56 = 47,624.40 : x
  2. Step 2: Convert to fraction form
    85,357.44/117,781.56 = 47,624.40/x
  3. Step 3: Cross multiply
    85,357.44x = 117,781.56 × 47,624.40
  4. Step 4: Simplify right side
    85,357.44x = 5,609,276,126.06
  5. Step 5: Solve for x
    x = 5,609,276,126.06/85,357.44
  6. Step 6: Final answer
    x = 65,715.14

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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.