Home / 55,787.16-76,987.62-30,637.20

Finding the Fourth Proportional to 55,787.16, 76,987.62 and 30,637.20

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Solution

The fourth proportional to 55,787.16, 76,987.62 and 30,637.20 is: 42,280.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,787.16 : 76,987.62 = 30,637.20 : x
  2. Step 2: Convert to fraction form
    55,787.16/76,987.62 = 30,637.20/x
  3. Step 3: Cross multiply
    55,787.16x = 76,987.62 × 30,637.20
  4. Step 4: Simplify right side
    55,787.16x = 2,358,685,111.46
  5. Step 5: Solve for x
    x = 2,358,685,111.46/55,787.16
  6. Step 6: Final answer
    x = 42,280.07

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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.