Home / 85,555.24-128,043.74-61,089.96

Finding the Fourth Proportional to 85,555.24, 128,043.74 and 61,089.96

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Solution

The fourth proportional to 85,555.24, 128,043.74 and 61,089.96 is: 91,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,555.24 : 128,043.74 = 61,089.96 : x
  2. Step 2: Convert to fraction form
    85,555.24/128,043.74 = 61,089.96/x
  3. Step 3: Cross multiply
    85,555.24x = 128,043.74 × 61,089.96
  4. Step 4: Simplify right side
    85,555.24x = 7,822,186,954.85
  5. Step 5: Solve for x
    x = 7,822,186,954.85/85,555.24
  6. Step 6: Final answer
    x = 91,428.50

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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.