Home / 42,787.17-64,127.30-20,594.66

Finding the Fourth Proportional to 42,787.17, 64,127.30 and 20,594.66

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Solution

The fourth proportional to 42,787.17, 64,127.30 and 20,594.66 is: 30,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,787.17 : 64,127.30 = 20,594.66 : x
  2. Step 2: Convert to fraction form
    42,787.17/64,127.30 = 20,594.66/x
  3. Step 3: Cross multiply
    42,787.17x = 64,127.30 × 20,594.66
  4. Step 4: Simplify right side
    42,787.17x = 1,320,679,516.61
  5. Step 5: Solve for x
    x = 1,320,679,516.61/42,787.17
  6. Step 6: Final answer
    x = 30,866.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.