Home / 38,778.90-58,058.80-31,620.72

Finding the Fourth Proportional to 38,778.90, 58,058.80 and 31,620.72

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Solution

The fourth proportional to 38,778.90, 58,058.80 and 31,620.72 is: 47,341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,778.90 : 58,058.80 = 31,620.72 : x
  2. Step 2: Convert to fraction form
    38,778.90/58,058.80 = 31,620.72/x
  3. Step 3: Cross multiply
    38,778.90x = 58,058.80 × 31,620.72
  4. Step 4: Simplify right side
    38,778.90x = 1,835,861,058.34
  5. Step 5: Solve for x
    x = 1,835,861,058.34/38,778.90
  6. Step 6: Final answer
    x = 47,341.75

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1.5x scale

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.