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Finding the Fourth Proportional to 99,748, 137,655.12 and 55,038.88

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Solution

The fourth proportional to 99,748, 137,655.12 and 55,038.88 is: 75,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748 : 137,655.12 = 55,038.88 : x
  2. Step 2: Convert to fraction form
    99,748/137,655.12 = 55,038.88/x
  3. Step 3: Cross multiply
    99,748x = 137,655.12 × 55,038.88
  4. Step 4: Simplify right side
    99,748x = 7,576,383,631.07
  5. Step 5: Solve for x
    x = 7,576,383,631.07/99,748
  6. Step 6: Final answer
    x = 75,955.24

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