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Finding the Fourth Proportional to 84,931, 117,212.07 and 47,212.54

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Solution

The fourth proportional to 84,931, 117,212.07 and 47,212.54 is: 65,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,931 : 117,212.07 = 47,212.54 : x
  2. Step 2: Convert to fraction form
    84,931/117,212.07 = 47,212.54/x
  3. Step 3: Cross multiply
    84,931x = 117,212.07 × 47,212.54
  4. Step 4: Simplify right side
    84,931x = 5,533,879,543.36
  5. Step 5: Solve for x
    x = 5,533,879,543.36/84,931
  6. Step 6: Final answer
    x = 65,157.36

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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.