Home / 51,427.40-77,152.38-21,870.52

Finding the Fourth Proportional to 51,427.40, 77,152.38 and 21,870.52

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Solution

The fourth proportional to 51,427.40, 77,152.38 and 21,870.52 is: 32,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,427.40 : 77,152.38 = 21,870.52 : x
  2. Step 2: Convert to fraction form
    51,427.40/77,152.38 = 21,870.52/x
  3. Step 3: Cross multiply
    51,427.40x = 77,152.38 × 21,870.52
  4. Step 4: Simplify right side
    51,427.40x = 1,687,362,669.84
  5. Step 5: Solve for x
    x = 1,687,362,669.84/51,427.40
  6. Step 6: Final answer
    x = 32,810.58

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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.