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Finding the Fourth Proportional to 78,804.45, 108,750.11 and 50,510.12

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Solution

The fourth proportional to 78,804.45, 108,750.11 and 50,510.12 is: 69,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804.45 : 108,750.11 = 50,510.12 : x
  2. Step 2: Convert to fraction form
    78,804.45/108,750.11 = 50,510.12/x
  3. Step 3: Cross multiply
    78,804.45x = 108,750.11 × 50,510.12
  4. Step 4: Simplify right side
    78,804.45x = 5,492,980,309.81
  5. Step 5: Solve for x
    x = 5,492,980,309.81/78,804.45
  6. Step 6: Final answer
    x = 69,703.94

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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.