Home / 40,934.40-61,401.60-21,206.40

Finding the Fourth Proportional to 40,934.40, 61,401.60 and 21,206.40

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Solution

The fourth proportional to 40,934.40, 61,401.60 and 21,206.40 is: 31,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,934.40 : 61,401.60 = 21,206.40 : x
  2. Step 2: Convert to fraction form
    40,934.40/61,401.60 = 21,206.40/x
  3. Step 3: Cross multiply
    40,934.40x = 61,401.60 × 21,206.40
  4. Step 4: Simplify right side
    40,934.40x = 1,302,106,890.24
  5. Step 5: Solve for x
    x = 1,302,106,890.24/40,934.40
  6. Step 6: Final answer
    x = 31,809.60

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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.