Home / 55,418.90-76,478.58-31,547.12

Finding the Fourth Proportional to 55,418.90, 76,478.58 and 31,547.12

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Solution

The fourth proportional to 55,418.90, 76,478.58 and 31,547.12 is: 43,535.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,418.90 : 76,478.58 = 31,547.12 : x
  2. Step 2: Convert to fraction form
    55,418.90/76,478.58 = 31,547.12/x
  3. Step 3: Cross multiply
    55,418.90x = 76,478.58 × 31,547.12
  4. Step 4: Simplify right side
    55,418.90x = 2,412,678,940.69
  5. Step 5: Solve for x
    x = 2,412,678,940.69/55,418.90
  6. Step 6: Final answer
    x = 43,535.31

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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.