Home / 51,386.68-77,085.15-13,947.36

Finding the Fourth Proportional to 51,386.68, 77,085.15 and 13,947.36

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Solution

The fourth proportional to 51,386.68, 77,085.15 and 13,947.36 is: 20,922.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,386.68 : 77,085.15 = 13,947.36 : x
  2. Step 2: Convert to fraction form
    51,386.68/77,085.15 = 13,947.36/x
  3. Step 3: Cross multiply
    51,386.68x = 77,085.15 × 13,947.36
  4. Step 4: Simplify right side
    51,386.68x = 1,075,134,337.70
  5. Step 5: Solve for x
    x = 1,075,134,337.70/51,386.68
  6. Step 6: Final answer
    x = 20,922.43

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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.