Home / 81,020.60-111,808.40-45,210.83

Finding the Fourth Proportional to 81,020.60, 111,808.40 and 45,210.83

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Solution

The fourth proportional to 81,020.60, 111,808.40 and 45,210.83 is: 62,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.60 : 111,808.40 = 45,210.83 : x
  2. Step 2: Convert to fraction form
    81,020.60/111,808.40 = 45,210.83/x
  3. Step 3: Cross multiply
    81,020.60x = 111,808.40 × 45,210.83
  4. Step 4: Simplify right side
    81,020.60x = 5,054,950,977.57
  5. Step 5: Solve for x
    x = 5,054,950,977.57/81,020.60
  6. Step 6: Final answer
    x = 62,390.93

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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.