Home / 75,142.08-103,781.16-51,227.64

Finding the Fourth Proportional to 75,142.08, 103,781.16 and 51,227.64

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Solution

The fourth proportional to 75,142.08, 103,781.16 and 51,227.64 is: 70,752.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,142.08 : 103,781.16 = 51,227.64 : x
  2. Step 2: Convert to fraction form
    75,142.08/103,781.16 = 51,227.64/x
  3. Step 3: Cross multiply
    75,142.08x = 103,781.16 × 51,227.64
  4. Step 4: Simplify right side
    75,142.08x = 5,316,463,903.26
  5. Step 5: Solve for x
    x = 5,316,463,903.26/75,142.08
  6. Step 6: Final answer
    x = 70,752.15

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1.5x scale

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.