Home / 78,365.40-117,496.98-28,436.04

Finding the Fourth Proportional to 78,365.40, 117,496.98 and 28,436.04

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Solution

The fourth proportional to 78,365.40, 117,496.98 and 28,436.04 is: 42,635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,365.40 : 117,496.98 = 28,436.04 : x
  2. Step 2: Convert to fraction form
    78,365.40/117,496.98 = 28,436.04/x
  3. Step 3: Cross multiply
    78,365.40x = 117,496.98 × 28,436.04
  4. Step 4: Simplify right side
    78,365.40x = 3,341,148,823.16
  5. Step 5: Solve for x
    x = 3,341,148,823.16/78,365.40
  6. Step 6: Final answer
    x = 42,635.51

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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.