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Finding the Fourth Proportional to 145,749, 218,623.50 and 40,570.71

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Solution

The fourth proportional to 145,749, 218,623.50 and 40,570.71 is: 60,856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,749 : 218,623.50 = 40,570.71 : x
  2. Step 2: Convert to fraction form
    145,749/218,623.50 = 40,570.71/x
  3. Step 3: Cross multiply
    145,749x = 218,623.50 × 40,570.71
  4. Step 4: Simplify right side
    145,749x = 8,869,710,617.69
  5. Step 5: Solve for x
    x = 8,869,710,617.69/145,749
  6. Step 6: Final answer
    x = 60,856.07

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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.