Home / 56,427.36-77,870.70-30,933.20

Finding the Fourth Proportional to 56,427.36, 77,870.70 and 30,933.20

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Solution

The fourth proportional to 56,427.36, 77,870.70 and 30,933.20 is: 42,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,427.36 : 77,870.70 = 30,933.20 : x
  2. Step 2: Convert to fraction form
    56,427.36/77,870.70 = 30,933.20/x
  3. Step 3: Cross multiply
    56,427.36x = 77,870.70 × 30,933.20
  4. Step 4: Simplify right side
    56,427.36x = 2,408,789,937.24
  5. Step 5: Solve for x
    x = 2,408,789,937.24/56,427.36
  6. Step 6: Final answer
    x = 42,688.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.