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Finding the Fourth Proportional to 88,154.43, 121,623.03 and 56,341.68

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Solution

The fourth proportional to 88,154.43, 121,623.03 and 56,341.68 is: 77,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,154.43 : 121,623.03 = 56,341.68 : x
  2. Step 2: Convert to fraction form
    88,154.43/121,623.03 = 56,341.68/x
  3. Step 3: Cross multiply
    88,154.43x = 121,623.03 × 56,341.68
  4. Step 4: Simplify right side
    88,154.43x = 6,852,445,836.89
  5. Step 5: Solve for x
    x = 6,852,445,836.89/88,154.43
  6. Step 6: Final answer
    x = 77,732.29

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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.