Home / 55,012.32-75,916.44-31,138.56

Finding the Fourth Proportional to 55,012.32, 75,916.44 and 31,138.56

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Solution

The fourth proportional to 55,012.32, 75,916.44 and 31,138.56 is: 42,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,012.32 : 75,916.44 = 31,138.56 : x
  2. Step 2: Convert to fraction form
    55,012.32/75,916.44 = 31,138.56/x
  3. Step 3: Cross multiply
    55,012.32x = 75,916.44 × 31,138.56
  4. Step 4: Simplify right side
    55,012.32x = 2,363,928,621.93
  5. Step 5: Solve for x
    x = 2,363,928,621.93/55,012.32
  6. Step 6: Final answer
    x = 42,970.89

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1.5x scale

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.