Home / 78,412.16-117,645.60-36,862.40

Finding the Fourth Proportional to 78,412.16, 117,645.60 and 36,862.40

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Solution

The fourth proportional to 78,412.16, 117,645.60 and 36,862.40 is: 55,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,412.16 : 117,645.60 = 36,862.40 : x
  2. Step 2: Convert to fraction form
    78,412.16/117,645.60 = 36,862.40/x
  3. Step 3: Cross multiply
    78,412.16x = 117,645.60 × 36,862.40
  4. Step 4: Simplify right side
    78,412.16x = 4,336,699,165.44
  5. Step 5: Solve for x
    x = 4,336,699,165.44/78,412.16
  6. Step 6: Final answer
    x = 55,306.46

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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.