Home / 86,979.76-120,028.70-49,254.10

Finding the Fourth Proportional to 86,979.76, 120,028.70 and 49,254.10

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Solution

The fourth proportional to 86,979.76, 120,028.70 and 49,254.10 is: 67,968.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,979.76 : 120,028.70 = 49,254.10 : x
  2. Step 2: Convert to fraction form
    86,979.76/120,028.70 = 49,254.10/x
  3. Step 3: Cross multiply
    86,979.76x = 120,028.70 × 49,254.10
  4. Step 4: Simplify right side
    86,979.76x = 5,911,905,592.67
  5. Step 5: Solve for x
    x = 5,911,905,592.67/86,979.76
  6. Step 6: Final answer
    x = 67,968.75

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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.