Home / 76,031.19-104,921.19-42,038.79

Finding the Fourth Proportional to 76,031.19, 104,921.19 and 42,038.79

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Solution

The fourth proportional to 76,031.19, 104,921.19 and 42,038.79 is: 58,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,031.19 : 104,921.19 = 42,038.79 : x
  2. Step 2: Convert to fraction form
    76,031.19/104,921.19 = 42,038.79/x
  3. Step 3: Cross multiply
    76,031.19x = 104,921.19 × 42,038.79
  4. Step 4: Simplify right side
    76,031.19x = 4,410,759,872.96
  5. Step 5: Solve for x
    x = 4,410,759,872.96/76,031.19
  6. Step 6: Final answer
    x = 58,012.51

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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.