Home / 82,307.28-123,460.02-19,977.78

Finding the Fourth Proportional to 82,307.28, 123,460.02 and 19,977.78

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Solution

The fourth proportional to 82,307.28, 123,460.02 and 19,977.78 is: 29,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,307.28 : 123,460.02 = 19,977.78 : x
  2. Step 2: Convert to fraction form
    82,307.28/123,460.02 = 19,977.78/x
  3. Step 3: Cross multiply
    82,307.28x = 123,460.02 × 19,977.78
  4. Step 4: Simplify right side
    82,307.28x = 2,466,457,118.36
  5. Step 5: Solve for x
    x = 2,466,457,118.36/82,307.28
  6. Step 6: Final answer
    x = 29,966.45

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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.