Home / 48,390.50-66,784.80-30,485.21

Finding the Fourth Proportional to 48,390.50, 66,784.80 and 30,485.21

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Solution

The fourth proportional to 48,390.50, 66,784.80 and 30,485.21 is: 42,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,390.50 : 66,784.80 = 30,485.21 : x
  2. Step 2: Convert to fraction form
    48,390.50/66,784.80 = 30,485.21/x
  3. Step 3: Cross multiply
    48,390.50x = 66,784.80 × 30,485.21
  4. Step 4: Simplify right side
    48,390.50x = 2,035,948,318.88
  5. Step 5: Solve for x
    x = 2,035,948,318.88/48,390.50
  6. Step 6: Final answer
    x = 42,073.30

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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.