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Finding the Fourth Proportional to 79,349.30, 118,793.55 and 77,045.30

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Solution

The fourth proportional to 79,349.30, 118,793.55 and 77,045.30 is: 115,344.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,349.30 : 118,793.55 = 77,045.30 : x
  2. Step 2: Convert to fraction form
    79,349.30/118,793.55 = 77,045.30/x
  3. Step 3: Cross multiply
    79,349.30x = 118,793.55 × 77,045.30
  4. Step 4: Simplify right side
    79,349.30x = 9,152,484,697.82
  5. Step 5: Solve for x
    x = 9,152,484,697.82/79,349.30
  6. Step 6: Final answer
    x = 115,344.24

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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.