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Finding the Fourth Proportional to 145,715.66, 218,573.88 and 40,534.64

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Solution

The fourth proportional to 145,715.66, 218,573.88 and 40,534.64 is: 60,802.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,715.66 : 218,573.88 = 40,534.64 : x
  2. Step 2: Convert to fraction form
    145,715.66/218,573.88 = 40,534.64/x
  3. Step 3: Cross multiply
    145,715.66x = 218,573.88 × 40,534.64
  4. Step 4: Simplify right side
    145,715.66x = 8,859,813,539.20
  5. Step 5: Solve for x
    x = 8,859,813,539.20/145,715.66
  6. Step 6: Final answer
    x = 60,802.07

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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.