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Finding the Fourth Proportional to 90,360.96, 124,702.92 and 50,079.12

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Solution

The fourth proportional to 90,360.96, 124,702.92 and 50,079.12 is: 69,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,360.96 : 124,702.92 = 50,079.12 : x
  2. Step 2: Convert to fraction form
    90,360.96/124,702.92 = 50,079.12/x
  3. Step 3: Cross multiply
    90,360.96x = 124,702.92 × 50,079.12
  4. Step 4: Simplify right side
    90,360.96x = 6,245,012,495.03
  5. Step 5: Solve for x
    x = 6,245,012,495.03/90,360.96
  6. Step 6: Final answer
    x = 69,111.84

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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.