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Finding the Fourth Proportional to 60,655.62, 90,925.86 and 21,187.02

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Solution

The fourth proportional to 60,655.62, 90,925.86 and 21,187.02 is: 31,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,655.62 : 90,925.86 = 21,187.02 : x
  2. Step 2: Convert to fraction form
    60,655.62/90,925.86 = 21,187.02/x
  3. Step 3: Cross multiply
    60,655.62x = 90,925.86 × 21,187.02
  4. Step 4: Simplify right side
    60,655.62x = 1,926,448,014.34
  5. Step 5: Solve for x
    x = 1,926,448,014.34/60,655.62
  6. Step 6: Final answer
    x = 31,760.42

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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.