Home / 84,943.72-127,421.58-25,784.20

Finding the Fourth Proportional to 84,943.72, 127,421.58 and 25,784.20

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Solution

The fourth proportional to 84,943.72, 127,421.58 and 25,784.20 is: 38,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,943.72 : 127,421.58 = 25,784.20 : x
  2. Step 2: Convert to fraction form
    84,943.72/127,421.58 = 25,784.20/x
  3. Step 3: Cross multiply
    84,943.72x = 127,421.58 × 25,784.20
  4. Step 4: Simplify right side
    84,943.72x = 3,285,463,503.04
  5. Step 5: Solve for x
    x = 3,285,463,503.04/84,943.72
  6. Step 6: Final answer
    x = 38,678.12

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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.