Home / 86,890.50-130,087.80-57,217.86

Finding the Fourth Proportional to 86,890.50, 130,087.80 and 57,217.86

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Solution

The fourth proportional to 86,890.50, 130,087.80 and 57,217.86 is: 85,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,890.50 : 130,087.80 = 57,217.86 : x
  2. Step 2: Convert to fraction form
    86,890.50/130,087.80 = 57,217.86/x
  3. Step 3: Cross multiply
    86,890.50x = 130,087.80 × 57,217.86
  4. Step 4: Simplify right side
    86,890.50x = 7,443,345,528.11
  5. Step 5: Solve for x
    x = 7,443,345,528.11/86,890.50
  6. Step 6: Final answer
    x = 85,663.51

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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.