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Finding the Fourth Proportional to 145,410.71, 218,116.08 and 45,570.89

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Solution

The fourth proportional to 145,410.71, 218,116.08 and 45,570.89 is: 68,356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,410.71 : 218,116.08 = 45,570.89 : x
  2. Step 2: Convert to fraction form
    145,410.71/218,116.08 = 45,570.89/x
  3. Step 3: Cross multiply
    145,410.71x = 218,116.08 × 45,570.89
  4. Step 4: Simplify right side
    145,410.71x = 9,939,743,888.91
  5. Step 5: Solve for x
    x = 9,939,743,888.91/145,410.71
  6. Step 6: Final answer
    x = 68,356.34

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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.