Home / 82,987.48-124,369.60-45,491.32

Finding the Fourth Proportional to 82,987.48, 124,369.60 and 45,491.32

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Solution

The fourth proportional to 82,987.48, 124,369.60 and 45,491.32 is: 68,175.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,987.48 : 124,369.60 = 45,491.32 : x
  2. Step 2: Convert to fraction form
    82,987.48/124,369.60 = 45,491.32/x
  3. Step 3: Cross multiply
    82,987.48x = 124,369.60 × 45,491.32
  4. Step 4: Simplify right side
    82,987.48x = 5,657,737,271.87
  5. Step 5: Solve for x
    x = 5,657,737,271.87/82,987.48
  6. Step 6: Final answer
    x = 68,175.79

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1.5x scale

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.