Home / 66,563.20-99,844.80-42,943.60

Finding the Fourth Proportional to 66,563.20, 99,844.80 and 42,943.60

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Solution

The fourth proportional to 66,563.20, 99,844.80 and 42,943.60 is: 64,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,563.20 : 99,844.80 = 42,943.60 : x
  2. Step 2: Convert to fraction form
    66,563.20/99,844.80 = 42,943.60/x
  3. Step 3: Cross multiply
    66,563.20x = 99,844.80 × 42,943.60
  4. Step 4: Simplify right side
    66,563.20x = 4,287,695,153.28
  5. Step 5: Solve for x
    x = 4,287,695,153.28/66,563.20
  6. Step 6: Final answer
    x = 64,415.40

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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.