Home / 85,621.46-128,432.18-26,455.82

Finding the Fourth Proportional to 85,621.46, 128,432.18 and 26,455.82

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Solution

The fourth proportional to 85,621.46, 128,432.18 and 26,455.82 is: 39,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,621.46 : 128,432.18 = 26,455.82 : x
  2. Step 2: Convert to fraction form
    85,621.46/128,432.18 = 26,455.82/x
  3. Step 3: Cross multiply
    85,621.46x = 128,432.18 × 26,455.82
  4. Step 4: Simplify right side
    85,621.46x = 3,397,778,060.27
  5. Step 5: Solve for x
    x = 3,397,778,060.27/85,621.46
  6. Step 6: Final answer
    x = 39,683.72

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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.