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Finding the Fourth Proportional to 57,287.40, 85,931.10 and 37,358.70

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Solution

The fourth proportional to 57,287.40, 85,931.10 and 37,358.70 is: 56,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,287.40 : 85,931.10 = 37,358.70 : x
  2. Step 2: Convert to fraction form
    57,287.40/85,931.10 = 37,358.70/x
  3. Step 3: Cross multiply
    57,287.40x = 85,931.10 × 37,358.70
  4. Step 4: Simplify right side
    57,287.40x = 3,210,274,185.57
  5. Step 5: Solve for x
    x = 3,210,274,185.57/57,287.40
  6. Step 6: Final answer
    x = 56,038.05

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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.