Home / 81,555.12-112,574.07-51,391.26

Finding the Fourth Proportional to 81,555.12, 112,574.07 and 51,391.26

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Solution

The fourth proportional to 81,555.12, 112,574.07 and 51,391.26 is: 70,937.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.12 : 112,574.07 = 51,391.26 : x
  2. Step 2: Convert to fraction form
    81,555.12/112,574.07 = 51,391.26/x
  3. Step 3: Cross multiply
    81,555.12x = 112,574.07 × 51,391.26
  4. Step 4: Simplify right side
    81,555.12x = 5,785,323,300.63
  5. Step 5: Solve for x
    x = 5,785,323,300.63/81,555.12
  6. Step 6: Final answer
    x = 70,937.59

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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.