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Finding the Fourth Proportional to 60,848.40, 91,271.88 and 21,405.36

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Solution

The fourth proportional to 60,848.40, 91,271.88 and 21,405.36 is: 32,107.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,848.40 : 91,271.88 = 21,405.36 : x
  2. Step 2: Convert to fraction form
    60,848.40/91,271.88 = 21,405.36/x
  3. Step 3: Cross multiply
    60,848.40x = 91,271.88 × 21,405.36
  4. Step 4: Simplify right side
    60,848.40x = 1,953,707,449.28
  5. Step 5: Solve for x
    x = 1,953,707,449.28/60,848.40
  6. Step 6: Final answer
    x = 32,107.79

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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.