Home / 85,416.10-128,124.61-56,020.09

Finding the Fourth Proportional to 85,416.10, 128,124.61 and 56,020.09

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Solution

The fourth proportional to 85,416.10, 128,124.61 and 56,020.09 is: 84,030.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,416.10 : 128,124.61 = 56,020.09 : x
  2. Step 2: Convert to fraction form
    85,416.10/128,124.61 = 56,020.09/x
  3. Step 3: Cross multiply
    85,416.10x = 128,124.61 × 56,020.09
  4. Step 4: Simplify right side
    85,416.10x = 7,177,551,262.69
  5. Step 5: Solve for x
    x = 7,177,551,262.69/85,416.10
  6. Step 6: Final answer
    x = 84,030.43

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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.