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Finding the Fourth Proportional to 145,407.35, 218,104.85 and 45,565.34

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Solution

The fourth proportional to 145,407.35, 218,104.85 and 45,565.34 is: 68,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,407.35 : 218,104.85 = 45,565.34 : x
  2. Step 2: Convert to fraction form
    145,407.35/218,104.85 = 45,565.34/x
  3. Step 3: Cross multiply
    145,407.35x = 218,104.85 × 45,565.34
  4. Step 4: Simplify right side
    145,407.35x = 9,938,020,669.29
  5. Step 5: Solve for x
    x = 9,938,020,669.29/145,407.35
  6. Step 6: Final answer
    x = 68,346.07

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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.