Home / 38,978,569.28-53,789,053.92-21,574,948.16

Finding the Fourth Proportional to 38,978,569.28, 53,789,053.92 and 21,574,948.16

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Solution

The fourth proportional to 38,978,569.28, 53,789,053.92 and 21,574,948.16 is: 29,772,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,978,569.28 : 53,789,053.92 = 21,574,948.16 : x
  2. Step 2: Convert to fraction form
    38,978,569.28/53,789,053.92 = 21,574,948.16/x
  3. Step 3: Cross multiply
    38,978,569.28x = 53,789,053.92 × 21,574,948.16
  4. Step 4: Simplify right side
    38,978,569.28x = 1,160,496,049,899,444.75
  5. Step 5: Solve for x
    x = 1,160,496,049,899,444.75/38,978,569.28
  6. Step 6: Final answer
    x = 29,772,669.22

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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.