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Finding the Fourth Proportional to 75,430.68, 112,973.78 and 36,015.46

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Solution

The fourth proportional to 75,430.68, 112,973.78 and 36,015.46 is: 53,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.68 : 112,973.78 = 36,015.46 : x
  2. Step 2: Convert to fraction form
    75,430.68/112,973.78 = 36,015.46/x
  3. Step 3: Cross multiply
    75,430.68x = 112,973.78 × 36,015.46
  4. Step 4: Simplify right side
    75,430.68x = 4,068,802,654.64
  5. Step 5: Solve for x
    x = 4,068,802,654.64/75,430.68
  6. Step 6: Final answer
    x = 53,940.95

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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.