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Finding the Fourth Proportional to 57,215.40, 85,823.10 and 48,575.40

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Solution

The fourth proportional to 57,215.40, 85,823.10 and 48,575.40 is: 72,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,215.40 : 85,823.10 = 48,575.40 : x
  2. Step 2: Convert to fraction form
    57,215.40/85,823.10 = 48,575.40/x
  3. Step 3: Cross multiply
    57,215.40x = 85,823.10 × 48,575.40
  4. Step 4: Simplify right side
    57,215.40x = 4,168,891,411.74
  5. Step 5: Solve for x
    x = 4,168,891,411.74/57,215.40
  6. Step 6: Final answer
    x = 72,863.10

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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.