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Finding the Fourth Proportional to 74,434.75, 102,721.58 and 40,900.75

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Solution

The fourth proportional to 74,434.75, 102,721.58 and 40,900.75 is: 56,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,434.75 : 102,721.58 = 40,900.75 : x
  2. Step 2: Convert to fraction form
    74,434.75/102,721.58 = 40,900.75/x
  3. Step 3: Cross multiply
    74,434.75x = 102,721.58 × 40,900.75
  4. Step 4: Simplify right side
    74,434.75x = 4,201,389,663.19
  5. Step 5: Solve for x
    x = 4,201,389,663.19/74,434.75
  6. Step 6: Final answer
    x = 56,443.93

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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.