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Finding the Fourth Proportional to 79,255.16, 118,881.54 and 19,284.20

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Solution

The fourth proportional to 79,255.16, 118,881.54 and 19,284.20 is: 28,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,255.16 : 118,881.54 = 19,284.20 : x
  2. Step 2: Convert to fraction form
    79,255.16/118,881.54 = 19,284.20/x
  3. Step 3: Cross multiply
    79,255.16x = 118,881.54 × 19,284.20
  4. Step 4: Simplify right side
    79,255.16x = 2,292,535,393.67
  5. Step 5: Solve for x
    x = 2,292,535,393.67/79,255.16
  6. Step 6: Final answer
    x = 28,926.01

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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.