Home / 72,145,220.64-99,566,703.06-39,556,471.20

Finding the Fourth Proportional to 72,145,220.64, 99,566,703.06 and 39,556,471.20

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Solution

The fourth proportional to 72,145,220.64, 99,566,703.06 and 39,556,471.20 is: 54,591,383.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,145,220.64 : 99,566,703.06 = 39,556,471.20 : x
  2. Step 2: Convert to fraction form
    72,145,220.64/99,566,703.06 = 39,556,471.20/x
  3. Step 3: Cross multiply
    72,145,220.64x = 99,566,703.06 × 39,556,471.20
  4. Step 4: Simplify right side
    72,145,220.64x = 3,938,507,422,071,842.50
  5. Step 5: Solve for x
    x = 3,938,507,422,071,842.50/72,145,220.64
  6. Step 6: Final answer
    x = 54,591,383.70

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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.