Home / 82,316.36-123,643.28-54,276.86

Finding the Fourth Proportional to 82,316.36, 123,643.28 and 54,276.86

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Solution

The fourth proportional to 82,316.36, 123,643.28 and 54,276.86 is: 81,526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,316.36 : 123,643.28 = 54,276.86 : x
  2. Step 2: Convert to fraction form
    82,316.36/123,643.28 = 54,276.86/x
  3. Step 3: Cross multiply
    82,316.36x = 123,643.28 × 54,276.86
  4. Step 4: Simplify right side
    82,316.36x = 6,710,968,515.98
  5. Step 5: Solve for x
    x = 6,710,968,515.98/82,316.36
  6. Step 6: Final answer
    x = 81,526.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.