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Finding the Fourth Proportional to 54,611.40, 75,362.72 and 30,740.70

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Solution

The fourth proportional to 54,611.40, 75,362.72 and 30,740.70 is: 42,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,611.40 : 75,362.72 = 30,740.70 : x
  2. Step 2: Convert to fraction form
    54,611.40/75,362.72 = 30,740.70/x
  3. Step 3: Cross multiply
    54,611.40x = 75,362.72 × 30,740.70
  4. Step 4: Simplify right side
    54,611.40x = 2,316,702,766.70
  5. Step 5: Solve for x
    x = 2,316,702,766.70/54,611.40
  6. Step 6: Final answer
    x = 42,421.60

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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.