Home / 85,038.39-127,515.67-28,858.01

Finding the Fourth Proportional to 85,038.39, 127,515.67 and 28,858.01

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Solution

The fourth proportional to 85,038.39, 127,515.67 and 28,858.01 is: 43,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,038.39 : 127,515.67 = 28,858.01 : x
  2. Step 2: Convert to fraction form
    85,038.39/127,515.67 = 28,858.01/x
  3. Step 3: Cross multiply
    85,038.39x = 127,515.67 × 28,858.01
  4. Step 4: Simplify right side
    85,038.39x = 3,679,847,770.29
  5. Step 5: Solve for x
    x = 3,679,847,770.29/85,038.39
  6. Step 6: Final answer
    x = 43,272.78

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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.