Home / 85,445.41-128,170.17-26,281.59

Finding the Fourth Proportional to 85,445.41, 128,170.17 and 26,281.59

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Solution

The fourth proportional to 85,445.41, 128,170.17 and 26,281.59 is: 39,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,445.41 : 128,170.17 = 26,281.59 : x
  2. Step 2: Convert to fraction form
    85,445.41/128,170.17 = 26,281.59/x
  3. Step 3: Cross multiply
    85,445.41x = 128,170.17 × 26,281.59
  4. Step 4: Simplify right side
    85,445.41x = 3,368,515,726.76
  5. Step 5: Solve for x
    x = 3,368,515,726.76/85,445.41
  6. Step 6: Final answer
    x = 39,423.02

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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.