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Finding the Fourth Proportional to 74,598.95, 102,945.09 and 40,608.21

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Solution

The fourth proportional to 74,598.95, 102,945.09 and 40,608.21 is: 56,038.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,598.95 : 102,945.09 = 40,608.21 : x
  2. Step 2: Convert to fraction form
    74,598.95/102,945.09 = 40,608.21/x
  3. Step 3: Cross multiply
    74,598.95x = 102,945.09 × 40,608.21
  4. Step 4: Simplify right side
    74,598.95x = 4,180,416,371.51
  5. Step 5: Solve for x
    x = 4,180,416,371.51/74,598.95
  6. Step 6: Final answer
    x = 56,038.54

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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.