Home / 85,827.60-128,753.55-26,657.10

Finding the Fourth Proportional to 85,827.60, 128,753.55 and 26,657.10

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Solution

The fourth proportional to 85,827.60, 128,753.55 and 26,657.10 is: 39,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,827.60 : 128,753.55 = 26,657.10 : x
  2. Step 2: Convert to fraction form
    85,827.60/128,753.55 = 26,657.10/x
  3. Step 3: Cross multiply
    85,827.60x = 128,753.55 × 26,657.10
  4. Step 4: Simplify right side
    85,827.60x = 3,432,196,257.71
  5. Step 5: Solve for x
    x = 3,432,196,257.71/85,827.60
  6. Step 6: Final answer
    x = 39,989.42

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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.