Home / 66,455.20-99,682.80-38,461.60

Finding the Fourth Proportional to 66,455.20, 99,682.80 and 38,461.60

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Solution

The fourth proportional to 66,455.20, 99,682.80 and 38,461.60 is: 57,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.20 : 99,682.80 = 38,461.60 : x
  2. Step 2: Convert to fraction form
    66,455.20/99,682.80 = 38,461.60/x
  3. Step 3: Cross multiply
    66,455.20x = 99,682.80 × 38,461.60
  4. Step 4: Simplify right side
    66,455.20x = 3,833,959,980.48
  5. Step 5: Solve for x
    x = 3,833,959,980.48/66,455.20
  6. Step 6: Final answer
    x = 57,692.40

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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.