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Finding the Fourth Proportional to 69,931.32, 96,540.96 and 47,389.44

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Solution

The fourth proportional to 69,931.32, 96,540.96 and 47,389.44 is: 65,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,931.32 : 96,540.96 = 47,389.44 : x
  2. Step 2: Convert to fraction form
    69,931.32/96,540.96 = 47,389.44/x
  3. Step 3: Cross multiply
    69,931.32x = 96,540.96 × 47,389.44
  4. Step 4: Simplify right side
    69,931.32x = 4,575,022,031.46
  5. Step 5: Solve for x
    x = 4,575,022,031.46/69,931.32
  6. Step 6: Final answer
    x = 65,421.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.