Home / 85,507.51-117,997.95-47,781.76

Finding the Fourth Proportional to 85,507.51, 117,997.95 and 47,781.76

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Solution

The fourth proportional to 85,507.51, 117,997.95 and 47,781.76 is: 65,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,507.51 : 117,997.95 = 47,781.76 : x
  2. Step 2: Convert to fraction form
    85,507.51/117,997.95 = 47,781.76/x
  3. Step 3: Cross multiply
    85,507.51x = 117,997.95 × 47,781.76
  4. Step 4: Simplify right side
    85,507.51x = 5,638,149,727.39
  5. Step 5: Solve for x
    x = 5,638,149,727.39/85,507.51
  6. Step 6: Final answer
    x = 65,937.48

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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.