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Finding the Fourth Proportional to 53,999.90, 81,024.15 and 18,964.70

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Solution

The fourth proportional to 53,999.90, 81,024.15 and 18,964.70 is: 28,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,999.90 : 81,024.15 = 18,964.70 : x
  2. Step 2: Convert to fraction form
    53,999.90/81,024.15 = 18,964.70/x
  3. Step 3: Cross multiply
    53,999.90x = 81,024.15 × 18,964.70
  4. Step 4: Simplify right side
    53,999.90x = 1,536,598,697.51
  5. Step 5: Solve for x
    x = 1,536,598,697.51/53,999.90
  6. Step 6: Final answer
    x = 28,455.58

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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.