Home / 85,554.36-128,332.85-26,389.94

Finding the Fourth Proportional to 85,554.36, 128,332.85 and 26,389.94

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Solution

The fourth proportional to 85,554.36, 128,332.85 and 26,389.94 is: 39,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,554.36 : 128,332.85 = 26,389.94 : x
  2. Step 2: Convert to fraction form
    85,554.36/128,332.85 = 26,389.94/x
  3. Step 3: Cross multiply
    85,554.36x = 128,332.85 × 26,389.94
  4. Step 4: Simplify right side
    85,554.36x = 3,386,695,437.92
  5. Step 5: Solve for x
    x = 3,386,695,437.92/85,554.36
  6. Step 6: Final answer
    x = 39,585.31

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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.