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Finding the Fourth Proportional to 60,485.40, 90,728.10 and 49,404.60

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Solution

The fourth proportional to 60,485.40, 90,728.10 and 49,404.60 is: 74,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,485.40 : 90,728.10 = 49,404.60 : x
  2. Step 2: Convert to fraction form
    60,485.40/90,728.10 = 49,404.60/x
  3. Step 3: Cross multiply
    60,485.40x = 90,728.10 × 49,404.60
  4. Step 4: Simplify right side
    60,485.40x = 4,482,385,489.26
  5. Step 5: Solve for x
    x = 4,482,385,489.26/60,485.40
  6. Step 6: Final answer
    x = 74,106.90

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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.