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Finding the Fourth Proportional to 65,204,494.80, 97,806,742.20 and 42,529,678.80

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Solution

The fourth proportional to 65,204,494.80, 97,806,742.20 and 42,529,678.80 is: 63,794,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,204,494.80 : 97,806,742.20 = 42,529,678.80 : x
  2. Step 2: Convert to fraction form
    65,204,494.80/97,806,742.20 = 42,529,678.80/x
  3. Step 3: Cross multiply
    65,204,494.80x = 97,806,742.20 × 42,529,678.80
  4. Step 4: Simplify right side
    65,204,494.80x = 4,159,689,330,240,405
  5. Step 5: Solve for x
    x = 4,159,689,330,240,405/65,204,494.80
  6. Step 6: Final answer
    x = 63,794,518.20

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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.