Home / 51,901.20-77,851.80-38,779.20

Finding the Fourth Proportional to 51,901.20, 77,851.80 and 38,779.20

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Solution

The fourth proportional to 51,901.20, 77,851.80 and 38,779.20 is: 58,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,901.20 : 77,851.80 = 38,779.20 : x
  2. Step 2: Convert to fraction form
    51,901.20/77,851.80 = 38,779.20/x
  3. Step 3: Cross multiply
    51,901.20x = 77,851.80 × 38,779.20
  4. Step 4: Simplify right side
    51,901.20x = 3,019,030,522.56
  5. Step 5: Solve for x
    x = 3,019,030,522.56/51,901.20
  6. Step 6: Final answer
    x = 58,168.80

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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.