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Finding the Fourth Proportional to 72,641.76, 100,294.05 and 45,459.17

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Solution

The fourth proportional to 72,641.76, 100,294.05 and 45,459.17 is: 62,763.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,641.76 : 100,294.05 = 45,459.17 : x
  2. Step 2: Convert to fraction form
    72,641.76/100,294.05 = 45,459.17/x
  3. Step 3: Cross multiply
    72,641.76x = 100,294.05 × 45,459.17
  4. Step 4: Simplify right side
    72,641.76x = 4,559,284,622.49
  5. Step 5: Solve for x
    x = 4,559,284,622.49/72,641.76
  6. Step 6: Final answer
    x = 62,763.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.