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Finding the Fourth Proportional to 66,023.88, 99,030.76 and 18,638.08

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Solution

The fourth proportional to 66,023.88, 99,030.76 and 18,638.08 is: 27,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.88 : 99,030.76 = 18,638.08 : x
  2. Step 2: Convert to fraction form
    66,023.88/99,030.76 = 18,638.08/x
  3. Step 3: Cross multiply
    66,023.88x = 99,030.76 × 18,638.08
  4. Step 4: Simplify right side
    66,023.88x = 1,845,743,227.34
  5. Step 5: Solve for x
    x = 1,845,743,227.34/66,023.88
  6. Step 6: Final answer
    x = 27,955.69

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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.