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Finding the Fourth Proportional to 58,449.90, 87,682.95 and 21,000.90

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Solution

The fourth proportional to 58,449.90, 87,682.95 and 21,000.90 is: 31,504.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,449.90 : 87,682.95 = 21,000.90 : x
  2. Step 2: Convert to fraction form
    58,449.90/87,682.95 = 21,000.90/x
  3. Step 3: Cross multiply
    58,449.90x = 87,682.95 × 21,000.90
  4. Step 4: Simplify right side
    58,449.90x = 1,841,420,864.66
  5. Step 5: Solve for x
    x = 1,841,420,864.66/58,449.90
  6. Step 6: Final answer
    x = 31,504.26

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1.5x scale

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.