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Finding the Fourth Proportional to 40,710.86, 61,074.98 and 12,630.30

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Solution

The fourth proportional to 40,710.86, 61,074.98 and 12,630.30 is: 18,948.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,710.86 : 61,074.98 = 12,630.30 : x
  2. Step 2: Convert to fraction form
    40,710.86/61,074.98 = 12,630.30/x
  3. Step 3: Cross multiply
    40,710.86x = 61,074.98 × 12,630.30
  4. Step 4: Simplify right side
    40,710.86x = 771,395,319.89
  5. Step 5: Solve for x
    x = 771,395,319.89/40,710.86
  6. Step 6: Final answer
    x = 18,948.15

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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.