Home / 81,561.55-112,555.07-45,751.45

Finding the Fourth Proportional to 81,561.55, 112,555.07 and 45,751.45

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Solution

The fourth proportional to 81,561.55, 112,555.07 and 45,751.45 is: 63,137.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,561.55 : 112,555.07 = 45,751.45 : x
  2. Step 2: Convert to fraction form
    81,561.55/112,555.07 = 45,751.45/x
  3. Step 3: Cross multiply
    81,561.55x = 112,555.07 × 45,751.45
  4. Step 4: Simplify right side
    81,561.55x = 5,149,557,657.35
  5. Step 5: Solve for x
    x = 5,149,557,657.35/81,561.55
  6. Step 6: Final answer
    x = 63,137.07

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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.