Home / 77,142.68-106,457.10-43,151.75

Finding the Fourth Proportional to 77,142.68, 106,457.10 and 43,151.75

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Solution

The fourth proportional to 77,142.68, 106,457.10 and 43,151.75 is: 59,549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,142.68 : 106,457.10 = 43,151.75 : x
  2. Step 2: Convert to fraction form
    77,142.68/106,457.10 = 43,151.75/x
  3. Step 3: Cross multiply
    77,142.68x = 106,457.10 × 43,151.75
  4. Step 4: Simplify right side
    77,142.68x = 4,593,810,164.93
  5. Step 5: Solve for x
    x = 4,593,810,164.93/77,142.68
  6. Step 6: Final answer
    x = 59,549.53

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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.