Home / 67,220,123.60-100,830,185.40-21,786,510.80

Finding the Fourth Proportional to 67,220,123.60, 100,830,185.40 and 21,786,510.80

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Solution

The fourth proportional to 67,220,123.60, 100,830,185.40 and 21,786,510.80 is: 32,679,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,220,123.60 : 100,830,185.40 = 21,786,510.80 : x
  2. Step 2: Convert to fraction form
    67,220,123.60/100,830,185.40 = 21,786,510.80/x
  3. Step 3: Cross multiply
    67,220,123.60x = 100,830,185.40 × 21,786,510.80
  4. Step 4: Simplify right side
    67,220,123.60x = 2,196,737,923,183,102.50
  5. Step 5: Solve for x
    x = 2,196,737,923,183,102.50/67,220,123.60
  6. Step 6: Final answer
    x = 32,679,766.20

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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.