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Finding the Fourth Proportional to 60,603.80, 90,805.46 and 30,980.88

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Solution

The fourth proportional to 60,603.80, 90,805.46 and 30,980.88 is: 46,420.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,603.80 : 90,805.46 = 30,980.88 : x
  2. Step 2: Convert to fraction form
    60,603.80/90,805.46 = 30,980.88/x
  3. Step 3: Cross multiply
    60,603.80x = 90,805.46 × 30,980.88
  4. Step 4: Simplify right side
    60,603.80x = 2,813,232,904.70
  5. Step 5: Solve for x
    x = 2,813,232,904.70/60,603.80
  6. Step 6: Final answer
    x = 46,420.08

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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.