Home / 72,811,032.96-100,478,546.20-39,771,269.44

Finding the Fourth Proportional to 72,811,032.96, 100,478,546.20 and 39,771,269.44

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Solution

The fourth proportional to 72,811,032.96, 100,478,546.20 and 39,771,269.44 is: 54,883,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,811,032.96 : 100,478,546.20 = 39,771,269.44 : x
  2. Step 2: Convert to fraction form
    72,811,032.96/100,478,546.20 = 39,771,269.44/x
  3. Step 3: Cross multiply
    72,811,032.96x = 100,478,546.20 × 39,771,269.44
  4. Step 4: Simplify right side
    72,811,032.96x = 3,996,159,333,859,688
  5. Step 5: Solve for x
    x = 3,996,159,333,859,688/72,811,032.96
  6. Step 6: Final answer
    x = 54,883,980.78

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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.