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Finding the Fourth Proportional to 85,011.56, 117,307.62 and 47,283.56

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Solution

The fourth proportional to 85,011.56, 117,307.62 and 47,283.56 is: 65,246.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,011.56 : 117,307.62 = 47,283.56 : x
  2. Step 2: Convert to fraction form
    85,011.56/117,307.62 = 47,283.56/x
  3. Step 3: Cross multiply
    85,011.56x = 117,307.62 × 47,283.56
  4. Step 4: Simplify right side
    85,011.56x = 5,546,721,888.73
  5. Step 5: Solve for x
    x = 5,546,721,888.73/85,011.56
  6. Step 6: Final answer
    x = 65,246.68

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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.