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Finding the Fourth Proportional to 74,868.80, 112,205.80 and 30,443.76

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Solution

The fourth proportional to 74,868.80, 112,205.80 and 30,443.76 is: 45,626.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,868.80 : 112,205.80 = 30,443.76 : x
  2. Step 2: Convert to fraction form
    74,868.80/112,205.80 = 30,443.76/x
  3. Step 3: Cross multiply
    74,868.80x = 112,205.80 × 30,443.76
  4. Step 4: Simplify right side
    74,868.80x = 3,415,966,445.81
  5. Step 5: Solve for x
    x = 3,415,966,445.81/74,868.80
  6. Step 6: Final answer
    x = 45,626.03

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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.