Home / 85,780.08-118,348.16-51,775.65

Finding the Fourth Proportional to 85,780.08, 118,348.16 and 51,775.65

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Solution

The fourth proportional to 85,780.08, 118,348.16 and 51,775.65 is: 71,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,780.08 : 118,348.16 = 51,775.65 : x
  2. Step 2: Convert to fraction form
    85,780.08/118,348.16 = 51,775.65/x
  3. Step 3: Cross multiply
    85,780.08x = 118,348.16 × 51,775.65
  4. Step 4: Simplify right side
    85,780.08x = 6,127,552,651.43
  5. Step 5: Solve for x
    x = 6,127,552,651.43/85,780.08
  6. Step 6: Final answer
    x = 71,433.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.