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Finding the Fourth Proportional to 78,869.52, 118,284.81 and 36,709.63

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Solution

The fourth proportional to 78,869.52, 118,284.81 and 36,709.63 is: 55,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.52 : 118,284.81 = 36,709.63 : x
  2. Step 2: Convert to fraction form
    78,869.52/118,284.81 = 36,709.63/x
  3. Step 3: Cross multiply
    78,869.52x = 118,284.81 × 36,709.63
  4. Step 4: Simplify right side
    78,869.52x = 4,342,191,509.02
  5. Step 5: Solve for x
    x = 4,342,191,509.02/78,869.52
  6. Step 6: Final answer
    x = 55,055.38

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1.5x scale

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.