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Finding the Fourth Proportional to 70,485.89, 97,270.08 and 40,280.45

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Solution

The fourth proportional to 70,485.89, 97,270.08 and 40,280.45 is: 55,586.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,485.89 : 97,270.08 = 40,280.45 : x
  2. Step 2: Convert to fraction form
    70,485.89/97,270.08 = 40,280.45/x
  3. Step 3: Cross multiply
    70,485.89x = 97,270.08 × 40,280.45
  4. Step 4: Simplify right side
    70,485.89x = 3,918,082,593.94
  5. Step 5: Solve for x
    x = 3,918,082,593.94/70,485.89
  6. Step 6: Final answer
    x = 55,586.76

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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.