Home / 66,402.54-99,638.37-26,988.78

Finding the Fourth Proportional to 66,402.54, 99,638.37 and 26,988.78

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Solution

The fourth proportional to 66,402.54, 99,638.37 and 26,988.78 is: 40,497.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.54 : 99,638.37 = 26,988.78 : x
  2. Step 2: Convert to fraction form
    66,402.54/99,638.37 = 26,988.78/x
  3. Step 3: Cross multiply
    66,402.54x = 99,638.37 × 26,988.78
  4. Step 4: Simplify right side
    66,402.54x = 2,689,118,047.49
  5. Step 5: Solve for x
    x = 2,689,118,047.49/66,402.54
  6. Step 6: Final answer
    x = 40,497.22

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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.