Home / 82,878.02-124,317.87-45,417.68

Finding the Fourth Proportional to 82,878.02, 124,317.87 and 45,417.68

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Solution

The fourth proportional to 82,878.02, 124,317.87 and 45,417.68 is: 68,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,878.02 : 124,317.87 = 45,417.68 : x
  2. Step 2: Convert to fraction form
    82,878.02/124,317.87 = 45,417.68/x
  3. Step 3: Cross multiply
    82,878.02x = 124,317.87 × 45,417.68
  4. Step 4: Simplify right side
    82,878.02x = 5,646,228,389.26
  5. Step 5: Solve for x
    x = 5,646,228,389.26/82,878.02
  6. Step 6: Final answer
    x = 68,126.97

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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.