Home / 61,021.36-91,532.16-21,557.20

Finding the Fourth Proportional to 61,021.36, 91,532.16 and 21,557.20

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Solution

The fourth proportional to 61,021.36, 91,532.16 and 21,557.20 is: 32,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,021.36 : 91,532.16 = 21,557.20 : x
  2. Step 2: Convert to fraction form
    61,021.36/91,532.16 = 21,557.20/x
  3. Step 3: Cross multiply
    61,021.36x = 91,532.16 × 21,557.20
  4. Step 4: Simplify right side
    61,021.36x = 1,973,177,079.55
  5. Step 5: Solve for x
    x = 1,973,177,079.55/61,021.36
  6. Step 6: Final answer
    x = 32,335.84

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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.