Home / 85,020.47-127,504.55-28,084.14

Finding the Fourth Proportional to 85,020.47, 127,504.55 and 28,084.14

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Solution

The fourth proportional to 85,020.47, 127,504.55 and 28,084.14 is: 42,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,020.47 : 127,504.55 = 28,084.14 : x
  2. Step 2: Convert to fraction form
    85,020.47/127,504.55 = 28,084.14/x
  3. Step 3: Cross multiply
    85,020.47x = 127,504.55 × 28,084.14
  4. Step 4: Simplify right side
    85,020.47x = 3,580,855,962.92
  5. Step 5: Solve for x
    x = 3,580,855,962.92/85,020.47
  6. Step 6: Final answer
    x = 42,117.58

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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.