Home / 55,709.09-76,878.65-30,558.77

Finding the Fourth Proportional to 55,709.09, 76,878.65 and 30,558.77

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Solution

The fourth proportional to 55,709.09, 76,878.65 and 30,558.77 is: 42,171.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,709.09 : 76,878.65 = 30,558.77 : x
  2. Step 2: Convert to fraction form
    55,709.09/76,878.65 = 30,558.77/x
  3. Step 3: Cross multiply
    55,709.09x = 76,878.65 × 30,558.77
  4. Step 4: Simplify right side
    55,709.09x = 2,349,316,983.26
  5. Step 5: Solve for x
    x = 2,349,316,983.26/55,709.09
  6. Step 6: Final answer
    x = 42,171.16

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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.