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Finding the Fourth Proportional to 71,361.81, 98,320.68 and 47,119.59

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Solution

The fourth proportional to 71,361.81, 98,320.68 and 47,119.59 is: 64,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.81 : 98,320.68 = 47,119.59 : x
  2. Step 2: Convert to fraction form
    71,361.81/98,320.68 = 47,119.59/x
  3. Step 3: Cross multiply
    71,361.81x = 98,320.68 × 47,119.59
  4. Step 4: Simplify right side
    71,361.81x = 4,632,830,130.12
  5. Step 5: Solve for x
    x = 4,632,830,130.12/71,361.81
  6. Step 6: Final answer
    x = 64,920.30

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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.