Home / 93,219.42-128,709.09-57,420.66

Finding the Fourth Proportional to 93,219.42, 128,709.09 and 57,420.66

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Solution

The fourth proportional to 93,219.42, 128,709.09 and 57,420.66 is: 79,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,219.42 : 128,709.09 = 57,420.66 : x
  2. Step 2: Convert to fraction form
    93,219.42/128,709.09 = 57,420.66/x
  3. Step 3: Cross multiply
    93,219.42x = 128,709.09 × 57,420.66
  4. Step 4: Simplify right side
    93,219.42x = 7,390,560,895.80
  5. Step 5: Solve for x
    x = 7,390,560,895.80/93,219.42
  6. Step 6: Final answer
    x = 79,281.34

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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.