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Finding the Fourth Proportional to 60,221.80, 90,332.70 and 15,855.40

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Solution

The fourth proportional to 60,221.80, 90,332.70 and 15,855.40 is: 23,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.80 : 90,332.70 = 15,855.40 : x
  2. Step 2: Convert to fraction form
    60,221.80/90,332.70 = 15,855.40/x
  3. Step 3: Cross multiply
    60,221.80x = 90,332.70 × 15,855.40
  4. Step 4: Simplify right side
    60,221.80x = 1,432,261,091.58
  5. Step 5: Solve for x
    x = 1,432,261,091.58/60,221.80
  6. Step 6: Final answer
    x = 23,783.10

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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.