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Finding the Fourth Proportional to 78,925.16, 108,916.58 and 45,397.48

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Solution

The fourth proportional to 78,925.16, 108,916.58 and 45,397.48 is: 62,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,925.16 : 108,916.58 = 45,397.48 : x
  2. Step 2: Convert to fraction form
    78,925.16/108,916.58 = 45,397.48/x
  3. Step 3: Cross multiply
    78,925.16x = 108,916.58 × 45,397.48
  4. Step 4: Simplify right side
    78,925.16x = 4,944,538,262.22
  5. Step 5: Solve for x
    x = 4,944,538,262.22/78,925.16
  6. Step 6: Final answer
    x = 62,648.44

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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.