Home / 74,619.12-102,983.28-42,787.92

Finding the Fourth Proportional to 74,619.12, 102,983.28 and 42,787.92

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Solution

The fourth proportional to 74,619.12, 102,983.28 and 42,787.92 is: 59,052.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,619.12 : 102,983.28 = 42,787.92 : x
  2. Step 2: Convert to fraction form
    74,619.12/102,983.28 = 42,787.92/x
  3. Step 3: Cross multiply
    74,619.12x = 102,983.28 × 42,787.92
  4. Step 4: Simplify right side
    74,619.12x = 4,406,440,345.98
  5. Step 5: Solve for x
    x = 4,406,440,345.98/74,619.12
  6. Step 6: Final answer
    x = 59,052.43

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1.5x scale

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.