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Finding the Fourth Proportional to 57,256.45, 85,885.28 and 15,703.45

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Solution

The fourth proportional to 57,256.45, 85,885.28 and 15,703.45 is: 23,555.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,256.45 : 85,885.28 = 15,703.45 : x
  2. Step 2: Convert to fraction form
    57,256.45/85,885.28 = 15,703.45/x
  3. Step 3: Cross multiply
    57,256.45x = 85,885.28 × 15,703.45
  4. Step 4: Simplify right side
    57,256.45x = 1,348,695,200.22
  5. Step 5: Solve for x
    x = 1,348,695,200.22/57,256.45
  6. Step 6: Final answer
    x = 23,555.34

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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.