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Finding the Fourth Proportional to 74,173.40, 111,210.90 and 40,909.40

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Solution

The fourth proportional to 74,173.40, 111,210.90 and 40,909.40 is: 61,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,173.40 : 111,210.90 = 40,909.40 : x
  2. Step 2: Convert to fraction form
    74,173.40/111,210.90 = 40,909.40/x
  3. Step 3: Cross multiply
    74,173.40x = 111,210.90 × 40,909.40
  4. Step 4: Simplify right side
    74,173.40x = 4,549,571,192.46
  5. Step 5: Solve for x
    x = 4,549,571,192.46/74,173.40
  6. Step 6: Final answer
    x = 61,336.96

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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.