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Finding the Fourth Proportional to 78,953.58, 118,425.51 and 26,358.66

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Solution

The fourth proportional to 78,953.58, 118,425.51 and 26,358.66 is: 39,536.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,953.58 : 118,425.51 = 26,358.66 : x
  2. Step 2: Convert to fraction form
    78,953.58/118,425.51 = 26,358.66/x
  3. Step 3: Cross multiply
    78,953.58x = 118,425.51 × 26,358.66
  4. Step 4: Simplify right side
    78,953.58x = 3,121,537,753.42
  5. Step 5: Solve for x
    x = 3,121,537,753.42/78,953.58
  6. Step 6: Final answer
    x = 39,536.37

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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.