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Finding the Fourth Proportional to 75,362.76, 103,889.59 and 57,426.66

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Solution

The fourth proportional to 75,362.76, 103,889.59 and 57,426.66 is: 79,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,362.76 : 103,889.59 = 57,426.66 : x
  2. Step 2: Convert to fraction form
    75,362.76/103,889.59 = 57,426.66/x
  3. Step 3: Cross multiply
    75,362.76x = 103,889.59 × 57,426.66
  4. Step 4: Simplify right side
    75,362.76x = 5,966,032,018.90
  5. Step 5: Solve for x
    x = 5,966,032,018.90/75,362.76
  6. Step 6: Final answer
    x = 79,164.19

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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.