Home / 36,290,721.60-54,436,082.40-20,985,220.80

Finding the Fourth Proportional to 36,290,721.60, 54,436,082.40 and 20,985,220.80

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Solution

The fourth proportional to 36,290,721.60, 54,436,082.40 and 20,985,220.80 is: 31,477,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,290,721.60 : 54,436,082.40 = 20,985,220.80 : x
  2. Step 2: Convert to fraction form
    36,290,721.60/54,436,082.40 = 20,985,220.80/x
  3. Step 3: Cross multiply
    36,290,721.60x = 54,436,082.40 × 20,985,220.80
  4. Step 4: Simplify right side
    36,290,721.60x = 1,142,353,208,650,994
  5. Step 5: Solve for x
    x = 1,142,353,208,650,994/36,290,721.60
  6. Step 6: Final answer
    x = 31,477,831.20

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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.