Home / 78,302.40-108,057.38-42,492.41

Finding the Fourth Proportional to 78,302.40, 108,057.38 and 42,492.41

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Solution

The fourth proportional to 78,302.40, 108,057.38 and 42,492.41 is: 58,639.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,302.40 : 108,057.38 = 42,492.41 : x
  2. Step 2: Convert to fraction form
    78,302.40/108,057.38 = 42,492.41/x
  3. Step 3: Cross multiply
    78,302.40x = 108,057.38 × 42,492.41
  4. Step 4: Simplify right side
    78,302.40x = 4,591,619,055.36
  5. Step 5: Solve for x
    x = 4,591,619,055.36/78,302.40
  6. Step 6: Final answer
    x = 58,639.57

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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.