Home / 87,220,121.40-130,830,182.10-53,123,916.60

Finding the Fourth Proportional to 87,220,121.40, 130,830,182.10 and 53,123,916.60

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Solution

The fourth proportional to 87,220,121.40, 130,830,182.10 and 53,123,916.60 is: 79,685,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,220,121.40 : 130,830,182.10 = 53,123,916.60 : x
  2. Step 2: Convert to fraction form
    87,220,121.40/130,830,182.10 = 53,123,916.60/x
  3. Step 3: Cross multiply
    87,220,121.40x = 130,830,182.10 × 53,123,916.60
  4. Step 4: Simplify right side
    87,220,121.40x = 6,950,211,682,643,213
  5. Step 5: Solve for x
    x = 6,950,211,682,643,213/87,220,121.40
  6. Step 6: Final answer
    x = 79,685,874.90

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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.