Home / 81,023.71-111,801.53-45,206.76

Finding the Fourth Proportional to 81,023.71, 111,801.53 and 45,206.76

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Solution

The fourth proportional to 81,023.71, 111,801.53 and 45,206.76 is: 62,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023.71 : 111,801.53 = 45,206.76 : x
  2. Step 2: Convert to fraction form
    81,023.71/111,801.53 = 45,206.76/x
  3. Step 3: Cross multiply
    81,023.71x = 111,801.53 × 45,206.76
  4. Step 4: Simplify right side
    81,023.71x = 5,054,184,934.34
  5. Step 5: Solve for x
    x = 5,054,184,934.34/81,023.71
  6. Step 6: Final answer
    x = 62,379.09

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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.