Home / 81,271.91-112,110.09-47,276.57

Finding the Fourth Proportional to 81,271.91, 112,110.09 and 47,276.57

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Solution

The fourth proportional to 81,271.91, 112,110.09 and 47,276.57 is: 65,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.91 : 112,110.09 = 47,276.57 : x
  2. Step 2: Convert to fraction form
    81,271.91/112,110.09 = 47,276.57/x
  3. Step 3: Cross multiply
    81,271.91x = 112,110.09 × 47,276.57
  4. Step 4: Simplify right side
    81,271.91x = 5,300,179,957.04
  5. Step 5: Solve for x
    x = 5,300,179,957.04/81,271.91
  6. Step 6: Final answer
    x = 65,215.40

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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.