Home / 85,855.10-128,782.65-22,675.10

Finding the Fourth Proportional to 85,855.10, 128,782.65 and 22,675.10

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Solution

The fourth proportional to 85,855.10, 128,782.65 and 22,675.10 is: 34,012.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,855.10 : 128,782.65 = 22,675.10 : x
  2. Step 2: Convert to fraction form
    85,855.10/128,782.65 = 22,675.10/x
  3. Step 3: Cross multiply
    85,855.10x = 128,782.65 × 22,675.10
  4. Step 4: Simplify right side
    85,855.10x = 2,920,159,467.02
  5. Step 5: Solve for x
    x = 2,920,159,467.02/85,855.10
  6. Step 6: Final answer
    x = 34,012.65

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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.