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Finding the Fourth Proportional to 74,143, 102,317.34 and 40,610.20

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Solution

The fourth proportional to 74,143, 102,317.34 and 40,610.20 is: 56,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143 : 102,317.34 = 40,610.20 : x
  2. Step 2: Convert to fraction form
    74,143/102,317.34 = 40,610.20/x
  3. Step 3: Cross multiply
    74,143x = 102,317.34 × 40,610.20
  4. Step 4: Simplify right side
    74,143x = 4,155,127,640.87
  5. Step 5: Solve for x
    x = 4,155,127,640.87/74,143
  6. Step 6: Final answer
    x = 56,042.08

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1.5x scale

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.