Home / 78,454.12-108,266.88-42,644.08

Finding the Fourth Proportional to 78,454.12, 108,266.88 and 42,644.08

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Solution

The fourth proportional to 78,454.12, 108,266.88 and 42,644.08 is: 58,848.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.12 : 108,266.88 = 42,644.08 : x
  2. Step 2: Convert to fraction form
    78,454.12/108,266.88 = 42,644.08/x
  3. Step 3: Cross multiply
    78,454.12x = 108,266.88 × 42,644.08
  4. Step 4: Simplify right side
    78,454.12x = 4,616,941,492.07
  5. Step 5: Solve for x
    x = 4,616,941,492.07/78,454.12
  6. Step 6: Final answer
    x = 58,848.94

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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.