Home / 82,235.12-113,425.92-56,751.20

Finding the Fourth Proportional to 82,235.12, 113,425.92 and 56,751.20

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Solution

The fourth proportional to 82,235.12, 113,425.92 and 56,751.20 is: 78,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,235.12 : 113,425.92 = 56,751.20 : x
  2. Step 2: Convert to fraction form
    82,235.12/113,425.92 = 56,751.20/x
  3. Step 3: Cross multiply
    82,235.12x = 113,425.92 × 56,751.20
  4. Step 4: Simplify right side
    82,235.12x = 6,437,057,071.10
  5. Step 5: Solve for x
    x = 6,437,057,071.10/82,235.12
  6. Step 6: Final answer
    x = 78,276.25

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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.