Home / 76,186.76-105,120.34-48,977.08

Finding the Fourth Proportional to 76,186.76, 105,120.34 and 48,977.08

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Solution

The fourth proportional to 76,186.76, 105,120.34 and 48,977.08 is: 67,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,186.76 : 105,120.34 = 48,977.08 : x
  2. Step 2: Convert to fraction form
    76,186.76/105,120.34 = 48,977.08/x
  3. Step 3: Cross multiply
    76,186.76x = 105,120.34 × 48,977.08
  4. Step 4: Simplify right side
    76,186.76x = 5,148,487,301.81
  5. Step 5: Solve for x
    x = 5,148,487,301.81/76,186.76
  6. Step 6: Final answer
    x = 67,577.19

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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.