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Finding the Fourth Proportional to 75,007.80, 112,512.90 and 19,603.80

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Solution

The fourth proportional to 75,007.80, 112,512.90 and 19,603.80 is: 29,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,007.80 : 112,512.90 = 19,603.80 : x
  2. Step 2: Convert to fraction form
    75,007.80/112,512.90 = 19,603.80/x
  3. Step 3: Cross multiply
    75,007.80x = 112,512.90 × 19,603.80
  4. Step 4: Simplify right side
    75,007.80x = 2,205,680,389.02
  5. Step 5: Solve for x
    x = 2,205,680,389.02/75,007.80
  6. Step 6: Final answer
    x = 29,406.01

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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.