Home / 38,689,112.97-53,390,973.86-21,285,084.51

Finding the Fourth Proportional to 38,689,112.97, 53,390,973.86 and 21,285,084.51

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Solution

The fourth proportional to 38,689,112.97, 53,390,973.86 and 21,285,084.51 is: 29,373,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689,112.97 : 53,390,973.86 = 21,285,084.51 : x
  2. Step 2: Convert to fraction form
    38,689,112.97/53,390,973.86 = 21,285,084.51/x
  3. Step 3: Cross multiply
    38,689,112.97x = 53,390,973.86 × 21,285,084.51
  4. Step 4: Simplify right side
    38,689,112.97x = 1,136,431,390,574,875.50
  5. Step 5: Solve for x
    x = 1,136,431,390,574,875.50/38,689,112.97
  6. Step 6: Final answer
    x = 29,373,415.50

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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.