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Finding the Fourth Proportional to 58,265.04, 87,375.30 and 20,818.08

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Solution

The fourth proportional to 58,265.04, 87,375.30 and 20,818.08 is: 31,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,265.04 : 87,375.30 = 20,818.08 : x
  2. Step 2: Convert to fraction form
    58,265.04/87,375.30 = 20,818.08/x
  3. Step 3: Cross multiply
    58,265.04x = 87,375.30 × 20,818.08
  4. Step 4: Simplify right side
    58,265.04x = 1,818,985,985.42
  5. Step 5: Solve for x
    x = 1,818,985,985.42/58,265.04
  6. Step 6: Final answer
    x = 31,219.17

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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.