Home / 87,276,973.81-120,557,192.49-64,691,133.02

Finding the Fourth Proportional to 87,276,973.81, 120,557,192.49 and 64,691,133.02

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Solution

The fourth proportional to 87,276,973.81, 120,557,192.49 and 64,691,133.02 is: 89,358,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,276,973.81 : 120,557,192.49 = 64,691,133.02 : x
  2. Step 2: Convert to fraction form
    87,276,973.81/120,557,192.49 = 64,691,133.02/x
  3. Step 3: Cross multiply
    87,276,973.81x = 120,557,192.49 × 64,691,133.02
  4. Step 4: Simplify right side
    87,276,973.81x = 7,798,981,376,189,728
  5. Step 5: Solve for x
    x = 7,798,981,376,189,728/87,276,973.81
  6. Step 6: Final answer
    x = 89,358,980.22

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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.