Home / 85,688.96-128,536.80-23,359.36

Finding the Fourth Proportional to 85,688.96, 128,536.80 and 23,359.36

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Solution

The fourth proportional to 85,688.96, 128,536.80 and 23,359.36 is: 35,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688.96 : 128,536.80 = 23,359.36 : x
  2. Step 2: Convert to fraction form
    85,688.96/128,536.80 = 23,359.36/x
  3. Step 3: Cross multiply
    85,688.96x = 128,536.80 × 23,359.36
  4. Step 4: Simplify right side
    85,688.96x = 3,002,537,384.45
  5. Step 5: Solve for x
    x = 3,002,537,384.45/85,688.96
  6. Step 6: Final answer
    x = 35,039.96

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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.