Home / 72,259,260.51-99,717,888.87-39,219,521.60

Finding the Fourth Proportional to 72,259,260.51, 99,717,888.87 and 39,219,521.60

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Solution

The fourth proportional to 72,259,260.51, 99,717,888.87 and 39,219,521.60 is: 54,122,999.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259,260.51 : 99,717,888.87 = 39,219,521.60 : x
  2. Step 2: Convert to fraction form
    72,259,260.51/99,717,888.87 = 39,219,521.60/x
  3. Step 3: Cross multiply
    72,259,260.51x = 99,717,888.87 × 39,219,521.60
  4. Step 4: Simplify right side
    72,259,260.51x = 3,910,887,896,443,365
  5. Step 5: Solve for x
    x = 3,910,887,896,443,365/72,259,260.51
  6. Step 6: Final answer
    x = 54,122,999.17

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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.