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Finding the Fourth Proportional to 57,328.90, 85,964.55 and 26,128.90

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Solution

The fourth proportional to 57,328.90, 85,964.55 and 26,128.90 is: 39,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,328.90 : 85,964.55 = 26,128.90 : x
  2. Step 2: Convert to fraction form
    57,328.90/85,964.55 = 26,128.90/x
  3. Step 3: Cross multiply
    57,328.90x = 85,964.55 × 26,128.90
  4. Step 4: Simplify right side
    57,328.90x = 2,246,159,130.50
  5. Step 5: Solve for x
    x = 2,246,159,130.50/57,328.90
  6. Step 6: Final answer
    x = 39,180.22

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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.