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Finding the Fourth Proportional to 85,014.56, 117,320.78 and 47,288.81

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Solution

The fourth proportional to 85,014.56, 117,320.78 and 47,288.81 is: 65,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,014.56 : 117,320.78 = 47,288.81 : x
  2. Step 2: Convert to fraction form
    85,014.56/117,320.78 = 47,288.81/x
  3. Step 3: Cross multiply
    85,014.56x = 117,320.78 × 47,288.81
  4. Step 4: Simplify right side
    85,014.56x = 5,547,960,353.00
  5. Step 5: Solve for x
    x = 5,547,960,353.00/85,014.56
  6. Step 6: Final answer
    x = 65,258.94

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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.