Home / 82,107.18-113,140.53-56,621.34

Finding the Fourth Proportional to 82,107.18, 113,140.53 and 56,621.34

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Solution

The fourth proportional to 82,107.18, 113,140.53 and 56,621.34 is: 78,022.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,107.18 : 113,140.53 = 56,621.34 : x
  2. Step 2: Convert to fraction form
    82,107.18/113,140.53 = 56,621.34/x
  3. Step 3: Cross multiply
    82,107.18x = 113,140.53 × 56,621.34
  4. Step 4: Simplify right side
    82,107.18x = 6,406,168,416.91
  5. Step 5: Solve for x
    x = 6,406,168,416.91/82,107.18
  6. Step 6: Final answer
    x = 78,022.02

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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.