Home / 42,759.20-64,009.20-31,095.20

Finding the Fourth Proportional to 42,759.20, 64,009.20 and 31,095.20

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Solution

The fourth proportional to 42,759.20, 64,009.20 and 31,095.20 is: 46,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.20 : 64,009.20 = 31,095.20 : x
  2. Step 2: Convert to fraction form
    42,759.20/64,009.20 = 31,095.20/x
  3. Step 3: Cross multiply
    42,759.20x = 64,009.20 × 31,095.20
  4. Step 4: Simplify right side
    42,759.20x = 1,990,378,875.84
  5. Step 5: Solve for x
    x = 1,990,378,875.84/42,759.20
  6. Step 6: Final answer
    x = 46,548.55

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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.