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Finding the Fourth Proportional to 105,347.98, 145,428.98 and 62,313.90

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Solution

The fourth proportional to 105,347.98, 145,428.98 and 62,313.90 is: 86,022.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,347.98 : 145,428.98 = 62,313.90 : x
  2. Step 2: Convert to fraction form
    105,347.98/145,428.98 = 62,313.90/x
  3. Step 3: Cross multiply
    105,347.98x = 145,428.98 × 62,313.90
  4. Step 4: Simplify right side
    105,347.98x = 9,062,246,916.82
  5. Step 5: Solve for x
    x = 9,062,246,916.82/105,347.98
  6. Step 6: Final answer
    x = 86,022.03

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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.