Home / 74,170.88-102,353.28-40,638.08

Finding the Fourth Proportional to 74,170.88, 102,353.28 and 40,638.08

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Solution

The fourth proportional to 74,170.88, 102,353.28 and 40,638.08 is: 56,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,170.88 : 102,353.28 = 40,638.08 : x
  2. Step 2: Convert to fraction form
    74,170.88/102,353.28 = 40,638.08/x
  3. Step 3: Cross multiply
    74,170.88x = 102,353.28 × 40,638.08
  4. Step 4: Simplify right side
    74,170.88x = 4,159,440,780.90
  5. Step 5: Solve for x
    x = 4,159,440,780.90/74,170.88
  6. Step 6: Final answer
    x = 56,079.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.