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Finding the Fourth Proportional to 57,746.70, 81,000.90 and 57,746.70

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Solution

The fourth proportional to 57,746.70, 81,000.90 and 57,746.70 is: 81,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,746.70 : 81,000.90 = 57,746.70 : x
  2. Step 2: Convert to fraction form
    57,746.70/81,000.90 = 57,746.70/x
  3. Step 3: Cross multiply
    57,746.70x = 81,000.90 × 57,746.70
  4. Step 4: Simplify right side
    57,746.70x = 4,677,534,672.03
  5. Step 5: Solve for x
    x = 4,677,534,672.03/57,746.70
  6. Step 6: Final answer
    x = 81,000.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.