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Finding the Fourth Proportional to 72,045.70, 100,630.70 and 72,045.70

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Solution

The fourth proportional to 72,045.70, 100,630.70 and 72,045.70 is: 100,630.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.70 : 100,630.70 = 72,045.70 : x
  2. Step 2: Convert to fraction form
    72,045.70/100,630.70 = 72,045.70/x
  3. Step 3: Cross multiply
    72,045.70x = 100,630.70 × 72,045.70
  4. Step 4: Simplify right side
    72,045.70x = 7,250,009,222.99
  5. Step 5: Solve for x
    x = 7,250,009,222.99/72,045.70
  6. Step 6: Final answer
    x = 100,630.70

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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.