Home / 85,703,612.10-128,555,418.15-63,879,101.70

Finding the Fourth Proportional to 85,703,612.10, 128,555,418.15 and 63,879,101.70

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Solution

The fourth proportional to 85,703,612.10, 128,555,418.15 and 63,879,101.70 is: 95,818,652.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,703,612.10 : 128,555,418.15 = 63,879,101.70 : x
  2. Step 2: Convert to fraction form
    85,703,612.10/128,555,418.15 = 63,879,101.70/x
  3. Step 3: Cross multiply
    85,703,612.10x = 128,555,418.15 × 63,879,101.70
  4. Step 4: Simplify right side
    85,703,612.10x = 8,212,004,630,089,877
  5. Step 5: Solve for x
    x = 8,212,004,630,089,877/85,703,612.10
  6. Step 6: Final answer
    x = 95,818,652.55

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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.