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Finding the Fourth Proportional to 78,805.59, 118,050.46 and 74,666.22

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Solution

The fourth proportional to 78,805.59, 118,050.46 and 74,666.22 is: 111,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,805.59 : 118,050.46 = 74,666.22 : x
  2. Step 2: Convert to fraction form
    78,805.59/118,050.46 = 74,666.22/x
  3. Step 3: Cross multiply
    78,805.59x = 118,050.46 × 74,666.22
  4. Step 4: Simplify right side
    78,805.59x = 8,814,381,408.10
  5. Step 5: Solve for x
    x = 8,814,381,408.10/78,805.59
  6. Step 6: Final answer
    x = 111,849.70

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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.