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Finding the Fourth Proportional to 78,753.68, 118,030.80 and 34,368.56

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Solution

The fourth proportional to 78,753.68, 118,030.80 and 34,368.56 is: 51,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753.68 : 118,030.80 = 34,368.56 : x
  2. Step 2: Convert to fraction form
    78,753.68/118,030.80 = 34,368.56/x
  3. Step 3: Cross multiply
    78,753.68x = 118,030.80 × 34,368.56
  4. Step 4: Simplify right side
    78,753.68x = 4,056,548,631.65
  5. Step 5: Solve for x
    x = 4,056,548,631.65/78,753.68
  6. Step 6: Final answer
    x = 51,509.32

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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.