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Finding the Fourth Proportional to 75,210.32, 112,786.32 and 40,130.84

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Solution

The fourth proportional to 75,210.32, 112,786.32 and 40,130.84 is: 60,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,210.32 : 112,786.32 = 40,130.84 : x
  2. Step 2: Convert to fraction form
    75,210.32/112,786.32 = 40,130.84/x
  3. Step 3: Cross multiply
    75,210.32x = 112,786.32 × 40,130.84
  4. Step 4: Simplify right side
    75,210.32x = 4,526,209,762.11
  5. Step 5: Solve for x
    x = 4,526,209,762.11/75,210.32
  6. Step 6: Final answer
    x = 60,180.70

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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.