Home / 81,271.89-112,149.93-45,455.70

Finding the Fourth Proportional to 81,271.89, 112,149.93 and 45,455.70

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Solution

The fourth proportional to 81,271.89, 112,149.93 and 45,455.70 is: 62,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.89 : 112,149.93 = 45,455.70 : x
  2. Step 2: Convert to fraction form
    81,271.89/112,149.93 = 45,455.70/x
  3. Step 3: Cross multiply
    81,271.89x = 112,149.93 × 45,455.70
  4. Step 4: Simplify right side
    81,271.89x = 5,097,853,573.10
  5. Step 5: Solve for x
    x = 5,097,853,573.10/81,271.89
  6. Step 6: Final answer
    x = 62,725.91

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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.