Home / 81,187.16-112,043.40-45,379.76

Finding the Fourth Proportional to 81,187.16, 112,043.40 and 45,379.76

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Solution

The fourth proportional to 81,187.16, 112,043.40 and 45,379.76 is: 62,626.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187.16 : 112,043.40 = 45,379.76 : x
  2. Step 2: Convert to fraction form
    81,187.16/112,043.40 = 45,379.76/x
  3. Step 3: Cross multiply
    81,187.16x = 112,043.40 × 45,379.76
  4. Step 4: Simplify right side
    81,187.16x = 5,084,502,601.58
  5. Step 5: Solve for x
    x = 5,084,502,601.58/81,187.16
  6. Step 6: Final answer
    x = 62,626.93

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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.