Home / 85,827.78-128,741.72-26,663.49

Finding the Fourth Proportional to 85,827.78, 128,741.72 and 26,663.49

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Solution

The fourth proportional to 85,827.78, 128,741.72 and 26,663.49 is: 39,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,827.78 : 128,741.72 = 26,663.49 : x
  2. Step 2: Convert to fraction form
    85,827.78/128,741.72 = 26,663.49/x
  3. Step 3: Cross multiply
    85,827.78x = 128,741.72 × 26,663.49
  4. Step 4: Simplify right side
    85,827.78x = 3,432,703,430.49
  5. Step 5: Solve for x
    x = 3,432,703,430.49/85,827.78
  6. Step 6: Final answer
    x = 39,995.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.