Home / 55,787.72-76,988.88-30,637.22

Finding the Fourth Proportional to 55,787.72, 76,988.88 and 30,637.22

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Solution

The fourth proportional to 55,787.72, 76,988.88 and 30,637.22 is: 42,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,787.72 : 76,988.88 = 30,637.22 : x
  2. Step 2: Convert to fraction form
    55,787.72/76,988.88 = 30,637.22/x
  3. Step 3: Cross multiply
    55,787.72x = 76,988.88 × 30,637.22
  4. Step 4: Simplify right side
    55,787.72x = 2,358,724,869.17
  5. Step 5: Solve for x
    x = 2,358,724,869.17/55,787.72
  6. Step 6: Final answer
    x = 42,280.36

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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.