Home / 66,529.20-99,793.80-42,909.60

Finding the Fourth Proportional to 66,529.20, 99,793.80 and 42,909.60

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Solution

The fourth proportional to 66,529.20, 99,793.80 and 42,909.60 is: 64,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,529.20 : 99,793.80 = 42,909.60 : x
  2. Step 2: Convert to fraction form
    66,529.20/99,793.80 = 42,909.60/x
  3. Step 3: Cross multiply
    66,529.20x = 99,793.80 × 42,909.60
  4. Step 4: Simplify right side
    66,529.20x = 4,282,112,040.48
  5. Step 5: Solve for x
    x = 4,282,112,040.48/66,529.20
  6. Step 6: Final answer
    x = 64,364.40

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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.