Home / 40,790.40-56,348.10-31,478.64

Finding the Fourth Proportional to 40,790.40, 56,348.10 and 31,478.64

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Solution

The fourth proportional to 40,790.40, 56,348.10 and 31,478.64 is: 43,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,790.40 : 56,348.10 = 31,478.64 : x
  2. Step 2: Convert to fraction form
    40,790.40/56,348.10 = 31,478.64/x
  3. Step 3: Cross multiply
    40,790.40x = 56,348.10 × 31,478.64
  4. Step 4: Simplify right side
    40,790.40x = 1,773,761,554.58
  5. Step 5: Solve for x
    x = 1,773,761,554.58/40,790.40
  6. Step 6: Final answer
    x = 43,484.78

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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.