Home / 71,646.81-98,871.89-39,815.03

Finding the Fourth Proportional to 71,646.81, 98,871.89 and 39,815.03

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Solution

The fourth proportional to 71,646.81, 98,871.89 and 39,815.03 is: 54,944.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,646.81 : 98,871.89 = 39,815.03 : x
  2. Step 2: Convert to fraction form
    71,646.81/98,871.89 = 39,815.03/x
  3. Step 3: Cross multiply
    71,646.81x = 98,871.89 × 39,815.03
  4. Step 4: Simplify right side
    71,646.81x = 3,936,586,573.07
  5. Step 5: Solve for x
    x = 3,936,586,573.07/71,646.81
  6. Step 6: Final answer
    x = 54,944.34

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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.