Home / 58,158.88-80,289.73-39,138.66

Finding the Fourth Proportional to 58,158.88, 80,289.73 and 39,138.66

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Solution

The fourth proportional to 58,158.88, 80,289.73 and 39,138.66 is: 54,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,158.88 : 80,289.73 = 39,138.66 : x
  2. Step 2: Convert to fraction form
    58,158.88/80,289.73 = 39,138.66/x
  3. Step 3: Cross multiply
    58,158.88x = 80,289.73 × 39,138.66
  4. Step 4: Simplify right side
    58,158.88x = 3,142,432,492.89
  5. Step 5: Solve for x
    x = 3,142,432,492.89/58,158.88
  6. Step 6: Final answer
    x = 54,031.86

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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.