Home / 85,352,675.10-128,029,018.23-20,656,491.18

Finding the Fourth Proportional to 85,352,675.10, 128,029,018.23 and 20,656,491.18

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Solution

The fourth proportional to 85,352,675.10, 128,029,018.23 and 20,656,491.18 is: 30,984,738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,352,675.10 : 128,029,018.23 = 20,656,491.18 : x
  2. Step 2: Convert to fraction form
    85,352,675.10/128,029,018.23 = 20,656,491.18/x
  3. Step 3: Cross multiply
    85,352,675.10x = 128,029,018.23 × 20,656,491.18
  4. Step 4: Simplify right side
    85,352,675.10x = 2,644,630,285,852,054.50
  5. Step 5: Solve for x
    x = 2,644,630,285,852,054.50/85,352,675.10
  6. Step 6: Final answer
    x = 30,984,738.12

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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.