Home / 38,904.40-58,356.60-31,128.40

Finding the Fourth Proportional to 38,904.40, 58,356.60 and 31,128.40

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Solution

The fourth proportional to 38,904.40, 58,356.60 and 31,128.40 is: 46,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,904.40 : 58,356.60 = 31,128.40 : x
  2. Step 2: Convert to fraction form
    38,904.40/58,356.60 = 31,128.40/x
  3. Step 3: Cross multiply
    38,904.40x = 58,356.60 × 31,128.40
  4. Step 4: Simplify right side
    38,904.40x = 1,816,547,587.44
  5. Step 5: Solve for x
    x = 1,816,547,587.44/38,904.40
  6. Step 6: Final answer
    x = 46,692.60

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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.