Home / 7,158,091.20-9,878,165.44-3,938,827.20

Finding the Fourth Proportional to 7,158,091.20, 9,878,165.44 and 3,938,827.20

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Solution

The fourth proportional to 7,158,091.20, 9,878,165.44 and 3,938,827.20 is: 5,435,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,091.20 : 9,878,165.44 = 3,938,827.20 : x
  2. Step 2: Convert to fraction form
    7,158,091.20/9,878,165.44 = 3,938,827.20/x
  3. Step 3: Cross multiply
    7,158,091.20x = 9,878,165.44 × 3,938,827.20
  4. Step 4: Simplify right side
    7,158,091.20x = 38,908,386,721,171.97
  5. Step 5: Solve for x
    x = 38,908,386,721,171.97/7,158,091.20
  6. Step 6: Final answer
    x = 5,435,581.31

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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.