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Finding the Fourth Proportional to 90,485.44, 124,870.01 and 52,766.98

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Solution

The fourth proportional to 90,485.44, 124,870.01 and 52,766.98 is: 72,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,485.44 : 124,870.01 = 52,766.98 : x
  2. Step 2: Convert to fraction form
    90,485.44/124,870.01 = 52,766.98/x
  3. Step 3: Cross multiply
    90,485.44x = 124,870.01 × 52,766.98
  4. Step 4: Simplify right side
    90,485.44x = 6,589,012,744.26
  5. Step 5: Solve for x
    x = 6,589,012,744.26/90,485.44
  6. Step 6: Final answer
    x = 72,818.49

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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.