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Finding the Fourth Proportional to 86,001.40, 128,928.52 and 32,663.58

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Solution

The fourth proportional to 86,001.40, 128,928.52 and 32,663.58 is: 48,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,001.40 : 128,928.52 = 32,663.58 : x
  2. Step 2: Convert to fraction form
    86,001.40/128,928.52 = 32,663.58/x
  3. Step 3: Cross multiply
    86,001.40x = 128,928.52 × 32,663.58
  4. Step 4: Simplify right side
    86,001.40x = 4,211,267,027.30
  5. Step 5: Solve for x
    x = 4,211,267,027.30/86,001.40
  6. Step 6: Final answer
    x = 48,967.42

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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.