Home / 66,656.08-91,858.80-47,760.40

Finding the Fourth Proportional to 66,656.08, 91,858.80 and 47,760.40

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Solution

The fourth proportional to 66,656.08, 91,858.80 and 47,760.40 is: 65,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.08 : 91,858.80 = 47,760.40 : x
  2. Step 2: Convert to fraction form
    66,656.08/91,858.80 = 47,760.40/x
  3. Step 3: Cross multiply
    66,656.08x = 91,858.80 × 47,760.40
  4. Step 4: Simplify right side
    66,656.08x = 4,387,213,031.52
  5. Step 5: Solve for x
    x = 4,387,213,031.52/66,656.08
  6. Step 6: Final answer
    x = 65,818.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.