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Finding the Fourth Proportional to 72,000.30, 108,000.45 and 56,966.70

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Solution

The fourth proportional to 72,000.30, 108,000.45 and 56,966.70 is: 85,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.30 : 108,000.45 = 56,966.70 : x
  2. Step 2: Convert to fraction form
    72,000.30/108,000.45 = 56,966.70/x
  3. Step 3: Cross multiply
    72,000.30x = 108,000.45 × 56,966.70
  4. Step 4: Simplify right side
    72,000.30x = 6,152,429,235.02
  5. Step 5: Solve for x
    x = 6,152,429,235.02/72,000.30
  6. Step 6: Final answer
    x = 85,450.05

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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.