Home / 85,800.18-128,701.20-23,470.68

Finding the Fourth Proportional to 85,800.18, 128,701.20 and 23,470.68

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Solution

The fourth proportional to 85,800.18, 128,701.20 and 23,470.68 is: 35,206.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800.18 : 128,701.20 = 23,470.68 : x
  2. Step 2: Convert to fraction form
    85,800.18/128,701.20 = 23,470.68/x
  3. Step 3: Cross multiply
    85,800.18x = 128,701.20 × 23,470.68
  4. Step 4: Simplify right side
    85,800.18x = 3,020,704,680.82
  5. Step 5: Solve for x
    x = 3,020,704,680.82/85,800.18
  6. Step 6: Final answer
    x = 35,206.27

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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.