Home / 85,800,665.70-128,700,998.55-51,363,288.90

Finding the Fourth Proportional to 85,800,665.70, 128,700,998.55 and 51,363,288.90

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Solution

The fourth proportional to 85,800,665.70, 128,700,998.55 and 51,363,288.90 is: 77,044,933.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800,665.70 : 128,700,998.55 = 51,363,288.90 : x
  2. Step 2: Convert to fraction form
    85,800,665.70/128,700,998.55 = 51,363,288.90/x
  3. Step 3: Cross multiply
    85,800,665.70x = 128,700,998.55 × 51,363,288.90
  4. Step 4: Simplify right side
    85,800,665.70x = 6,610,506,570,242,131
  5. Step 5: Solve for x
    x = 6,610,506,570,242,131/85,800,665.70
  6. Step 6: Final answer
    x = 77,044,933.35

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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.