Home / 51,987.55-78,015.93-28,301.07

Finding the Fourth Proportional to 51,987.55, 78,015.93 and 28,301.07

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Solution

The fourth proportional to 51,987.55, 78,015.93 and 28,301.07 is: 42,470.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,987.55 : 78,015.93 = 28,301.07 : x
  2. Step 2: Convert to fraction form
    51,987.55/78,015.93 = 28,301.07/x
  3. Step 3: Cross multiply
    51,987.55x = 78,015.93 × 28,301.07
  4. Step 4: Simplify right side
    51,987.55x = 2,207,934,154.54
  5. Step 5: Solve for x
    x = 2,207,934,154.54/51,987.55
  6. Step 6: Final answer
    x = 42,470.44

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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.