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Finding the Fourth Proportional to 86,959.51, 120,000.70 and 49,233.76

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Solution

The fourth proportional to 86,959.51, 120,000.70 and 49,233.76 is: 67,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,959.51 : 120,000.70 = 49,233.76 : x
  2. Step 2: Convert to fraction form
    86,959.51/120,000.70 = 49,233.76/x
  3. Step 3: Cross multiply
    86,959.51x = 120,000.70 × 49,233.76
  4. Step 4: Simplify right side
    86,959.51x = 5,908,085,663.63
  5. Step 5: Solve for x
    x = 5,908,085,663.63/86,959.51
  6. Step 6: Final answer
    x = 67,940.65

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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.