Home / 93,780.16-129,418.90-51,338.56

Finding the Fourth Proportional to 93,780.16, 129,418.90 and 51,338.56

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Solution

The fourth proportional to 93,780.16, 129,418.90 and 51,338.56 is: 70,848.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,780.16 : 129,418.90 = 51,338.56 : x
  2. Step 2: Convert to fraction form
    93,780.16/129,418.90 = 51,338.56/x
  3. Step 3: Cross multiply
    93,780.16x = 129,418.90 × 51,338.56
  4. Step 4: Simplify right side
    93,780.16x = 6,644,179,962.78
  5. Step 5: Solve for x
    x = 6,644,179,962.78/93,780.16
  6. Step 6: Final answer
    x = 70,848.46

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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.