Home / 55,352.25-76,385.70-31,478.90

Finding the Fourth Proportional to 55,352.25, 76,385.70 and 31,478.90

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Solution

The fourth proportional to 55,352.25, 76,385.70 and 31,478.90 is: 43,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,352.25 : 76,385.70 = 31,478.90 : x
  2. Step 2: Convert to fraction form
    55,352.25/76,385.70 = 31,478.90/x
  3. Step 3: Cross multiply
    55,352.25x = 76,385.70 × 31,478.90
  4. Step 4: Simplify right side
    55,352.25x = 2,404,537,429.80
  5. Step 5: Solve for x
    x = 2,404,537,429.80/55,352.25
  6. Step 6: Final answer
    x = 43,440.64

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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.