Home / 81,685.04-112,705.55-47,674.08

Finding the Fourth Proportional to 81,685.04, 112,705.55 and 47,674.08

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Solution

The fourth proportional to 81,685.04, 112,705.55 and 47,674.08 is: 65,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.04 : 112,705.55 = 47,674.08 : x
  2. Step 2: Convert to fraction form
    81,685.04/112,705.55 = 47,674.08/x
  3. Step 3: Cross multiply
    81,685.04x = 112,705.55 × 47,674.08
  4. Step 4: Simplify right side
    81,685.04x = 5,373,133,168.77
  5. Step 5: Solve for x
    x = 5,373,133,168.77/81,685.04
  6. Step 6: Final answer
    x = 65,778.67

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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.