Home / 85,875.22-128,834.80-26,711.40

Finding the Fourth Proportional to 85,875.22, 128,834.80 and 26,711.40

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Solution

The fourth proportional to 85,875.22, 128,834.80 and 26,711.40 is: 40,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,875.22 : 128,834.80 = 26,711.40 : x
  2. Step 2: Convert to fraction form
    85,875.22/128,834.80 = 26,711.40/x
  3. Step 3: Cross multiply
    85,875.22x = 128,834.80 × 26,711.40
  4. Step 4: Simplify right side
    85,875.22x = 3,441,357,876.72
  5. Step 5: Solve for x
    x = 3,441,357,876.72/85,875.22
  6. Step 6: Final answer
    x = 40,073.93

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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.