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Finding the Fourth Proportional to 87,480.46, 120,681.46 and 51,646.47

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Solution

The fourth proportional to 87,480.46, 120,681.46 and 51,646.47 is: 71,247.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,480.46 : 120,681.46 = 51,646.47 : x
  2. Step 2: Convert to fraction form
    87,480.46/120,681.46 = 51,646.47/x
  3. Step 3: Cross multiply
    87,480.46x = 120,681.46 × 51,646.47
  4. Step 4: Simplify right side
    87,480.46x = 6,232,771,403.45
  5. Step 5: Solve for x
    x = 6,232,771,403.45/87,480.46
  6. Step 6: Final answer
    x = 71,247.58

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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.