Home / 61,123.23-91,698.62-21,680.28

Finding the Fourth Proportional to 61,123.23, 91,698.62 and 21,680.28

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Solution

The fourth proportional to 61,123.23, 91,698.62 and 21,680.28 is: 32,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,123.23 : 91,698.62 = 21,680.28 : x
  2. Step 2: Convert to fraction form
    61,123.23/91,698.62 = 21,680.28/x
  3. Step 3: Cross multiply
    61,123.23x = 91,698.62 × 21,680.28
  4. Step 4: Simplify right side
    61,123.23x = 1,988,051,648.81
  5. Step 5: Solve for x
    x = 1,988,051,648.81/61,123.23
  6. Step 6: Final answer
    x = 32,525.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.