Home / 78,938.28-118,482.29-48,861.55

Finding the Fourth Proportional to 78,938.28, 118,482.29 and 48,861.55

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Solution

The fourth proportional to 78,938.28, 118,482.29 and 48,861.55 is: 73,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.28 : 118,482.29 = 48,861.55 : x
  2. Step 2: Convert to fraction form
    78,938.28/118,482.29 = 48,861.55/x
  3. Step 3: Cross multiply
    78,938.28x = 118,482.29 × 48,861.55
  4. Step 4: Simplify right side
    78,938.28x = 5,789,228,032.36
  5. Step 5: Solve for x
    x = 5,789,228,032.36/78,938.28
  6. Step 6: Final answer
    x = 73,338.66

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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.