Home / 85,578.08-128,339.80-29,404.64

Finding the Fourth Proportional to 85,578.08, 128,339.80 and 29,404.64

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Solution

The fourth proportional to 85,578.08, 128,339.80 and 29,404.64 is: 44,097.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,578.08 : 128,339.80 = 29,404.64 : x
  2. Step 2: Convert to fraction form
    85,578.08/128,339.80 = 29,404.64/x
  3. Step 3: Cross multiply
    85,578.08x = 128,339.80 × 29,404.64
  4. Step 4: Simplify right side
    85,578.08x = 3,773,785,616.67
  5. Step 5: Solve for x
    x = 3,773,785,616.67/85,578.08
  6. Step 6: Final answer
    x = 44,097.57

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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.