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Finding the Fourth Proportional to 74,117.10, 111,248.55 and 36,719.40

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Solution

The fourth proportional to 74,117.10, 111,248.55 and 36,719.40 is: 55,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,117.10 : 111,248.55 = 36,719.40 : x
  2. Step 2: Convert to fraction form
    74,117.10/111,248.55 = 36,719.40/x
  3. Step 3: Cross multiply
    74,117.10x = 111,248.55 × 36,719.40
  4. Step 4: Simplify right side
    74,117.10x = 4,084,980,006.87
  5. Step 5: Solve for x
    x = 4,084,980,006.87/74,117.10
  6. Step 6: Final answer
    x = 55,115.22

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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.