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Finding the Fourth Proportional to 45,572.49, 68,360.81 and 13,980.24

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Solution

The fourth proportional to 45,572.49, 68,360.81 and 13,980.24 is: 20,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,572.49 : 68,360.81 = 13,980.24 : x
  2. Step 2: Convert to fraction form
    45,572.49/68,360.81 = 13,980.24/x
  3. Step 3: Cross multiply
    45,572.49x = 68,360.81 × 13,980.24
  4. Step 4: Simplify right side
    45,572.49x = 955,700,460.49
  5. Step 5: Solve for x
    x = 955,700,460.49/45,572.49
  6. Step 6: Final answer
    x = 20,971.00

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1.5x scale

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.