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Finding the Fourth Proportional to 85,100.92, 117,439.23 and 47,384.08

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Solution

The fourth proportional to 85,100.92, 117,439.23 and 47,384.08 is: 65,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,100.92 : 117,439.23 = 47,384.08 : x
  2. Step 2: Convert to fraction form
    85,100.92/117,439.23 = 47,384.08/x
  3. Step 3: Cross multiply
    85,100.92x = 117,439.23 × 47,384.08
  4. Step 4: Simplify right side
    85,100.92x = 5,564,749,869.46
  5. Step 5: Solve for x
    x = 5,564,749,869.46/85,100.92
  6. Step 6: Final answer
    x = 65,390.01

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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.