Home / 61,089.36-91,648.40-18,967.28

Finding the Fourth Proportional to 61,089.36, 91,648.40 and 18,967.28

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Solution

The fourth proportional to 61,089.36, 91,648.40 and 18,967.28 is: 28,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,089.36 : 91,648.40 = 18,967.28 : x
  2. Step 2: Convert to fraction form
    61,089.36/91,648.40 = 18,967.28/x
  3. Step 3: Cross multiply
    61,089.36x = 91,648.40 × 18,967.28
  4. Step 4: Simplify right side
    61,089.36x = 1,738,320,864.35
  5. Step 5: Solve for x
    x = 1,738,320,864.35/61,089.36
  6. Step 6: Final answer
    x = 28,455.38

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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.