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Finding the Fourth Proportional to 57,280.48, 85,954.74 and 30,984.64

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Solution

The fourth proportional to 57,280.48, 85,954.74 and 30,984.64 is: 46,495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,280.48 : 85,954.74 = 30,984.64 : x
  2. Step 2: Convert to fraction form
    57,280.48/85,954.74 = 30,984.64/x
  3. Step 3: Cross multiply
    57,280.48x = 85,954.74 × 30,984.64
  4. Step 4: Simplify right side
    57,280.48x = 2,663,276,675.19
  5. Step 5: Solve for x
    x = 2,663,276,675.19/57,280.48
  6. Step 6: Final answer
    x = 46,495.36

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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.