Home / 48,420.20-72,630.30-31,788.20

Finding the Fourth Proportional to 48,420.20, 72,630.30 and 31,788.20

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Solution

The fourth proportional to 48,420.20, 72,630.30 and 31,788.20 is: 47,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,420.20 : 72,630.30 = 31,788.20 : x
  2. Step 2: Convert to fraction form
    48,420.20/72,630.30 = 31,788.20/x
  3. Step 3: Cross multiply
    48,420.20x = 72,630.30 × 31,788.20
  4. Step 4: Simplify right side
    48,420.20x = 2,308,786,502.46
  5. Step 5: Solve for x
    x = 2,308,786,502.46/48,420.20
  6. Step 6: Final answer
    x = 47,682.30

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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.