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Finding the Fourth Proportional to 74,227.70, 102,440.70 and 40,700.18

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Solution

The fourth proportional to 74,227.70, 102,440.70 and 40,700.18 is: 56,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,227.70 : 102,440.70 = 40,700.18 : x
  2. Step 2: Convert to fraction form
    74,227.70/102,440.70 = 40,700.18/x
  3. Step 3: Cross multiply
    74,227.70x = 102,440.70 × 40,700.18
  4. Step 4: Simplify right side
    74,227.70x = 4,169,354,417.12
  5. Step 5: Solve for x
    x = 4,169,354,417.12/74,227.70
  6. Step 6: Final answer
    x = 56,169.80

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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.