Home / 78,464.02-108,278.07-42,653.11

Finding the Fourth Proportional to 78,464.02, 108,278.07 and 42,653.11

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Solution

The fourth proportional to 78,464.02, 108,278.07 and 42,653.11 is: 58,860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.02 : 108,278.07 = 42,653.11 : x
  2. Step 2: Convert to fraction form
    78,464.02/108,278.07 = 42,653.11/x
  3. Step 3: Cross multiply
    78,464.02x = 108,278.07 × 42,653.11
  4. Step 4: Simplify right side
    78,464.02x = 4,618,396,430.30
  5. Step 5: Solve for x
    x = 4,618,396,430.30/78,464.02
  6. Step 6: Final answer
    x = 58,860.05

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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.