Home / 85,464.19-128,208.43-26,304.79

Finding the Fourth Proportional to 85,464.19, 128,208.43 and 26,304.79

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Solution

The fourth proportional to 85,464.19, 128,208.43 and 26,304.79 is: 39,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464.19 : 128,208.43 = 26,304.79 : x
  2. Step 2: Convert to fraction form
    85,464.19/128,208.43 = 26,304.79/x
  3. Step 3: Cross multiply
    85,464.19x = 128,208.43 × 26,304.79
  4. Step 4: Simplify right side
    85,464.19x = 3,372,495,054.81
  5. Step 5: Solve for x
    x = 3,372,495,054.81/85,464.19
  6. Step 6: Final answer
    x = 39,460.92

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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.