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Finding the Fourth Proportional to 52,886.55, 79,328.52 and 12,905.82

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Solution

The fourth proportional to 52,886.55, 79,328.52 and 12,905.82 is: 19,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,886.55 : 79,328.52 = 12,905.82 : x
  2. Step 2: Convert to fraction form
    52,886.55/79,328.52 = 12,905.82/x
  3. Step 3: Cross multiply
    52,886.55x = 79,328.52 × 12,905.82
  4. Step 4: Simplify right side
    52,886.55x = 1,023,799,599.99
  5. Step 5: Solve for x
    x = 1,023,799,599.99/52,886.55
  6. Step 6: Final answer
    x = 19,358.41

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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.