Home / 66,461.52-91,711.80-38,176.32

Finding the Fourth Proportional to 66,461.52, 91,711.80 and 38,176.32

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Solution

The fourth proportional to 66,461.52, 91,711.80 and 38,176.32 is: 52,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.52 : 91,711.80 = 38,176.32 : x
  2. Step 2: Convert to fraction form
    66,461.52/91,711.80 = 38,176.32/x
  3. Step 3: Cross multiply
    66,461.52x = 91,711.80 × 38,176.32
  4. Step 4: Simplify right side
    66,461.52x = 3,501,219,024.58
  5. Step 5: Solve for x
    x = 3,501,219,024.58/66,461.52
  6. Step 6: Final answer
    x = 52,680.39

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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.