Home / 78,938.45-108,942.45-43,133.76

Finding the Fourth Proportional to 78,938.45, 108,942.45 and 43,133.76

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Solution

The fourth proportional to 78,938.45, 108,942.45 and 43,133.76 is: 59,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.45 : 108,942.45 = 43,133.76 : x
  2. Step 2: Convert to fraction form
    78,938.45/108,942.45 = 43,133.76/x
  3. Step 3: Cross multiply
    78,938.45x = 108,942.45 × 43,133.76
  4. Step 4: Simplify right side
    78,938.45x = 4,699,097,492.11
  5. Step 5: Solve for x
    x = 4,699,097,492.11/78,938.45
  6. Step 6: Final answer
    x = 59,528.63

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1.5x scale

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.