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Finding the Fourth Proportional to 70,591, 97,415.58 and 40,783

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Solution

The fourth proportional to 70,591, 97,415.58 and 40,783 is: 56,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,591 : 97,415.58 = 40,783 : x
  2. Step 2: Convert to fraction form
    70,591/97,415.58 = 40,783/x
  3. Step 3: Cross multiply
    70,591x = 97,415.58 × 40,783
  4. Step 4: Simplify right side
    70,591x = 3,972,899,599.14
  5. Step 5: Solve for x
    x = 3,972,899,599.14/70,591
  6. Step 6: Final answer
    x = 56,280.54

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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.