Home / 66,031.20-99,046.80-43,772.40

Finding the Fourth Proportional to 66,031.20, 99,046.80 and 43,772.40

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Solution

The fourth proportional to 66,031.20, 99,046.80 and 43,772.40 is: 65,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031.20 : 99,046.80 = 43,772.40 : x
  2. Step 2: Convert to fraction form
    66,031.20/99,046.80 = 43,772.40/x
  3. Step 3: Cross multiply
    66,031.20x = 99,046.80 × 43,772.40
  4. Step 4: Simplify right side
    66,031.20x = 4,335,516,148.32
  5. Step 5: Solve for x
    x = 4,335,516,148.32/66,031.20
  6. Step 6: Final answer
    x = 65,658.60

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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.