Home / 82,380.57-113,678.10-47,931.66

Finding the Fourth Proportional to 82,380.57, 113,678.10 and 47,931.66

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Solution

The fourth proportional to 82,380.57, 113,678.10 and 47,931.66 is: 66,141.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,380.57 : 113,678.10 = 47,931.66 : x
  2. Step 2: Convert to fraction form
    82,380.57/113,678.10 = 47,931.66/x
  3. Step 3: Cross multiply
    82,380.57x = 113,678.10 × 47,931.66
  4. Step 4: Simplify right side
    82,380.57x = 5,448,780,038.65
  5. Step 5: Solve for x
    x = 5,448,780,038.65/82,380.57
  6. Step 6: Final answer
    x = 66,141.57

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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.