Home / 55,707.09-76,875.89-30,556.77

Finding the Fourth Proportional to 55,707.09, 76,875.89 and 30,556.77

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Solution

The fourth proportional to 55,707.09, 76,875.89 and 30,556.77 is: 42,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,707.09 : 76,875.89 = 30,556.77 : x
  2. Step 2: Convert to fraction form
    55,707.09/76,875.89 = 30,556.77/x
  3. Step 3: Cross multiply
    55,707.09x = 76,875.89 × 30,556.77
  4. Step 4: Simplify right side
    55,707.09x = 2,349,078,736.49
  5. Step 5: Solve for x
    x = 2,349,078,736.49/55,707.09
  6. Step 6: Final answer
    x = 42,168.40

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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.