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Finding the Fourth Proportional to 78,613.00, 108,484.86 and 42,803.02

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Solution

The fourth proportional to 78,613.00, 108,484.86 and 42,803.02 is: 59,067.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,613.00 : 108,484.86 = 42,803.02 : x
  2. Step 2: Convert to fraction form
    78,613.00/108,484.86 = 42,803.02/x
  3. Step 3: Cross multiply
    78,613.00x = 108,484.86 × 42,803.02
  4. Step 4: Simplify right side
    78,613.00x = 4,643,479,077.40
  5. Step 5: Solve for x
    x = 4,643,479,077.40/78,613.00
  6. Step 6: Final answer
    x = 59,067.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.