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Finding the Fourth Proportional to 74,702.94, 103,088.70 and 40,711.71

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Solution

The fourth proportional to 74,702.94, 103,088.70 and 40,711.71 is: 56,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.94 : 103,088.70 = 40,711.71 : x
  2. Step 2: Convert to fraction form
    74,702.94/103,088.70 = 40,711.71/x
  3. Step 3: Cross multiply
    74,702.94x = 103,088.70 × 40,711.71
  4. Step 4: Simplify right side
    74,702.94x = 4,196,917,258.68
  5. Step 5: Solve for x
    x = 4,196,917,258.68/74,702.94
  6. Step 6: Final answer
    x = 56,181.42

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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.