Home / 86,179.47-118,879.08-51,715.28

Finding the Fourth Proportional to 86,179.47, 118,879.08 and 51,715.28

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Solution

The fourth proportional to 86,179.47, 118,879.08 and 51,715.28 is: 71,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,179.47 : 118,879.08 = 51,715.28 : x
  2. Step 2: Convert to fraction form
    86,179.47/118,879.08 = 51,715.28/x
  3. Step 3: Cross multiply
    86,179.47x = 118,879.08 × 51,715.28
  4. Step 4: Simplify right side
    86,179.47x = 6,147,864,313.95
  5. Step 5: Solve for x
    x = 6,147,864,313.95/86,179.47
  6. Step 6: Final answer
    x = 71,337.92

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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.