Home / 72,478,279.31-99,986,949.09-43,092,888.89

Finding the Fourth Proportional to 72,478,279.31, 99,986,949.09 and 43,092,888.89

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Solution

The fourth proportional to 72,478,279.31, 99,986,949.09 and 43,092,888.89 is: 59,448,520.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,478,279.31 : 99,986,949.09 = 43,092,888.89 : x
  2. Step 2: Convert to fraction form
    72,478,279.31/99,986,949.09 = 43,092,888.89/x
  3. Step 3: Cross multiply
    72,478,279.31x = 99,986,949.09 × 43,092,888.89
  4. Step 4: Simplify right side
    72,478,279.31x = 4,308,726,487,085,522
  5. Step 5: Solve for x
    x = 4,308,726,487,085,522/72,478,279.31
  6. Step 6: Final answer
    x = 59,448,520.69

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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.