Home / 55,199.48-76,185.78-31,328.40

Finding the Fourth Proportional to 55,199.48, 76,185.78 and 31,328.40

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Solution

The fourth proportional to 55,199.48, 76,185.78 and 31,328.40 is: 43,239.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,199.48 : 76,185.78 = 31,328.40 : x
  2. Step 2: Convert to fraction form
    55,199.48/76,185.78 = 31,328.40/x
  3. Step 3: Cross multiply
    55,199.48x = 76,185.78 × 31,328.40
  4. Step 4: Simplify right side
    55,199.48x = 2,386,778,590.15
  5. Step 5: Solve for x
    x = 2,386,778,590.15/55,199.48
  6. Step 6: Final answer
    x = 43,239.15

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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.