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Finding the Fourth Proportional to 86,980.76, 120,030.08 and 49,255.10

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Solution

The fourth proportional to 86,980.76, 120,030.08 and 49,255.10 is: 67,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,980.76 : 120,030.08 = 49,255.10 : x
  2. Step 2: Convert to fraction form
    86,980.76/120,030.08 = 49,255.10/x
  3. Step 3: Cross multiply
    86,980.76x = 120,030.08 × 49,255.10
  4. Step 4: Simplify right side
    86,980.76x = 5,912,093,593.41
  5. Step 5: Solve for x
    x = 5,912,093,593.41/86,980.76
  6. Step 6: Final answer
    x = 67,970.13

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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.