Home / 72,145,220.89-99,566,703.41-39,556,471.45

Finding the Fourth Proportional to 72,145,220.89, 99,566,703.41 and 39,556,471.45

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Solution

The fourth proportional to 72,145,220.89, 99,566,703.41 and 39,556,471.45 is: 54,591,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,145,220.89 : 99,566,703.41 = 39,556,471.45 : x
  2. Step 2: Convert to fraction form
    72,145,220.89/99,566,703.41 = 39,556,471.45/x
  3. Step 3: Cross multiply
    72,145,220.89x = 99,566,703.41 × 39,556,471.45
  4. Step 4: Simplify right side
    72,145,220.89x = 3,938,507,460,808,283
  5. Step 5: Solve for x
    x = 3,938,507,460,808,283/72,145,220.89
  6. Step 6: Final answer
    x = 54,591,384.05

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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.