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Finding the Fourth Proportional to 48,276.90, 72,415.35 and 40,986.90

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Solution

The fourth proportional to 48,276.90, 72,415.35 and 40,986.90 is: 61,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,276.90 : 72,415.35 = 40,986.90 : x
  2. Step 2: Convert to fraction form
    48,276.90/72,415.35 = 40,986.90/x
  3. Step 3: Cross multiply
    48,276.90x = 72,415.35 × 40,986.90
  4. Step 4: Simplify right side
    48,276.90x = 2,968,080,708.92
  5. Step 5: Solve for x
    x = 2,968,080,708.92/48,276.90
  6. Step 6: Final answer
    x = 61,480.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.