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Finding the Fourth Proportional to 86,123.88, 129,244.86 and 33,533.64

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Solution

The fourth proportional to 86,123.88, 129,244.86 and 33,533.64 is: 50,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123.88 : 129,244.86 = 33,533.64 : x
  2. Step 2: Convert to fraction form
    86,123.88/129,244.86 = 33,533.64/x
  3. Step 3: Cross multiply
    86,123.88x = 129,244.86 × 33,533.64
  4. Step 4: Simplify right side
    86,123.88x = 4,334,050,607.09
  5. Step 5: Solve for x
    x = 4,334,050,607.09/86,123.88
  6. Step 6: Final answer
    x = 50,323.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.