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Finding the Fourth Proportional to 72,430.56, 99,955.08 and 44,138.88

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Solution

The fourth proportional to 72,430.56, 99,955.08 and 44,138.88 is: 60,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.56 : 99,955.08 = 44,138.88 : x
  2. Step 2: Convert to fraction form
    72,430.56/99,955.08 = 44,138.88/x
  3. Step 3: Cross multiply
    72,430.56x = 99,955.08 × 44,138.88
  4. Step 4: Simplify right side
    72,430.56x = 4,411,905,281.51
  5. Step 5: Solve for x
    x = 4,411,905,281.51/72,430.56
  6. Step 6: Final answer
    x = 60,912.21

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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.