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Finding the Fourth Proportional to 79,476.93, 119,215.47 and 20,312.64

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Solution

The fourth proportional to 79,476.93, 119,215.47 and 20,312.64 is: 30,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,476.93 : 119,215.47 = 20,312.64 : x
  2. Step 2: Convert to fraction form
    79,476.93/119,215.47 = 20,312.64/x
  3. Step 3: Cross multiply
    79,476.93x = 119,215.47 × 20,312.64
  4. Step 4: Simplify right side
    79,476.93x = 2,421,580,924.54
  5. Step 5: Solve for x
    x = 2,421,580,924.54/79,476.93
  6. Step 6: Final answer
    x = 30,468.98

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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.