Home / 39,990,663.36-55,187,036.64-21,655,892.16

Finding the Fourth Proportional to 39,990,663.36, 55,187,036.64 and 21,655,892.16

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Solution

The fourth proportional to 39,990,663.36, 55,187,036.64 and 21,655,892.16 is: 29,885,088.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990,663.36 : 55,187,036.64 = 21,655,892.16 : x
  2. Step 2: Convert to fraction form
    39,990,663.36/55,187,036.64 = 21,655,892.16/x
  3. Step 3: Cross multiply
    39,990,663.36x = 55,187,036.64 × 21,655,892.16
  4. Step 4: Simplify right side
    39,990,663.36x = 1,195,124,514,105,808.75
  5. Step 5: Solve for x
    x = 1,195,124,514,105,808.75/39,990,663.36
  6. Step 6: Final answer
    x = 29,885,088.51

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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.