Home / 72,808,564.58-100,475,222-39,768,834.78

Finding the Fourth Proportional to 72,808,564.58, 100,475,222 and 39,768,834.78

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Solution

The fourth proportional to 72,808,564.58, 100,475,222 and 39,768,834.78 is: 54,880,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,808,564.58 : 100,475,222 = 39,768,834.78 : x
  2. Step 2: Convert to fraction form
    72,808,564.58/100,475,222 = 39,768,834.78/x
  3. Step 3: Cross multiply
    72,808,564.58x = 100,475,222 × 39,768,834.78
  4. Step 4: Simplify right side
    72,808,564.58x = 3,995,782,502,699,445
  5. Step 5: Solve for x
    x = 3,995,782,502,699,445/72,808,564.58
  6. Step 6: Final answer
    x = 54,880,665.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.