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Finding the Fourth Proportional to 74,693.76, 103,077.06 and 40,702.12

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Solution

The fourth proportional to 74,693.76, 103,077.06 and 40,702.12 is: 56,168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,693.76 : 103,077.06 = 40,702.12 : x
  2. Step 2: Convert to fraction form
    74,693.76/103,077.06 = 40,702.12/x
  3. Step 3: Cross multiply
    74,693.76x = 103,077.06 × 40,702.12
  4. Step 4: Simplify right side
    74,693.76x = 4,195,454,865.37
  5. Step 5: Solve for x
    x = 4,195,454,865.37/74,693.76
  6. Step 6: Final answer
    x = 56,168.75

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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.