Home / 85,758.23-128,649.80-26,598.67

Finding the Fourth Proportional to 85,758.23, 128,649.80 and 26,598.67

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Solution

The fourth proportional to 85,758.23, 128,649.80 and 26,598.67 is: 39,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,758.23 : 128,649.80 = 26,598.67 : x
  2. Step 2: Convert to fraction form
    85,758.23/128,649.80 = 26,598.67/x
  3. Step 3: Cross multiply
    85,758.23x = 128,649.80 × 26,598.67
  4. Step 4: Simplify right side
    85,758.23x = 3,421,913,320.64
  5. Step 5: Solve for x
    x = 3,421,913,320.64/85,758.23
  6. Step 6: Final answer
    x = 39,901.86

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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.