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Finding the Fourth Proportional to 85,149.51, 117,511.70 and 47,423.67

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Solution

The fourth proportional to 85,149.51, 117,511.70 and 47,423.67 is: 65,447.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.51 : 117,511.70 = 47,423.67 : x
  2. Step 2: Convert to fraction form
    85,149.51/117,511.70 = 47,423.67/x
  3. Step 3: Cross multiply
    85,149.51x = 117,511.70 × 47,423.67
  4. Step 4: Simplify right side
    85,149.51x = 5,572,835,844.82
  5. Step 5: Solve for x
    x = 5,572,835,844.82/85,149.51
  6. Step 6: Final answer
    x = 65,447.66

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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.