Home / 74,038.76-102,173.11-40,047.21

Finding the Fourth Proportional to 74,038.76, 102,173.11 and 40,047.21

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Solution

The fourth proportional to 74,038.76, 102,173.11 and 40,047.21 is: 55,264.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,038.76 : 102,173.11 = 40,047.21 : x
  2. Step 2: Convert to fraction form
    74,038.76/102,173.11 = 40,047.21/x
  3. Step 3: Cross multiply
    74,038.76x = 102,173.11 × 40,047.21
  4. Step 4: Simplify right side
    74,038.76x = 4,091,747,992.52
  5. Step 5: Solve for x
    x = 4,091,747,992.52/74,038.76
  6. Step 6: Final answer
    x = 55,264.94

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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.