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Finding the Fourth Proportional to 75,419.80, 112,935.30 and 59,867.80

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Solution

The fourth proportional to 75,419.80, 112,935.30 and 59,867.80 is: 89,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,419.80 : 112,935.30 = 59,867.80 : x
  2. Step 2: Convert to fraction form
    75,419.80/112,935.30 = 59,867.80/x
  3. Step 3: Cross multiply
    75,419.80x = 112,935.30 × 59,867.80
  4. Step 4: Simplify right side
    75,419.80x = 6,761,187,953.34
  5. Step 5: Solve for x
    x = 6,761,187,953.34/75,419.80
  6. Step 6: Final answer
    x = 89,647.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.