Home / 72,166,929.57-99,591,102.89-39,127,242.60

Finding the Fourth Proportional to 72,166,929.57, 99,591,102.89 and 39,127,242.60

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Solution

The fourth proportional to 72,166,929.57, 99,591,102.89 and 39,127,242.60 is: 53,995,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,166,929.57 : 99,591,102.89 = 39,127,242.60 : x
  2. Step 2: Convert to fraction form
    72,166,929.57/99,591,102.89 = 39,127,242.60/x
  3. Step 3: Cross multiply
    72,166,929.57x = 99,591,102.89 × 39,127,242.60
  4. Step 4: Simplify right side
    72,166,929.57x = 3,896,725,243,578,591.50
  5. Step 5: Solve for x
    x = 3,896,725,243,578,591.50/72,166,929.57
  6. Step 6: Final answer
    x = 53,995,996.04

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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.