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Finding the Fourth Proportional to 73,320.18, 109,980.09 and 17,916.18

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Solution

The fourth proportional to 73,320.18, 109,980.09 and 17,916.18 is: 26,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,320.18 : 109,980.09 = 17,916.18 : x
  2. Step 2: Convert to fraction form
    73,320.18/109,980.09 = 17,916.18/x
  3. Step 3: Cross multiply
    73,320.18x = 109,980.09 × 17,916.18
  4. Step 4: Simplify right side
    73,320.18x = 1,970,423,088.86
  5. Step 5: Solve for x
    x = 1,970,423,088.86/73,320.18
  6. Step 6: Final answer
    x = 26,874.23

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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.