Home / 105,391.31-145,445.33-62,395.47

Finding the Fourth Proportional to 105,391.31, 145,445.33 and 62,395.47

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Solution

The fourth proportional to 105,391.31, 145,445.33 and 62,395.47 is: 86,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.31 : 145,445.33 = 62,395.47 : x
  2. Step 2: Convert to fraction form
    105,391.31/145,445.33 = 62,395.47/x
  3. Step 3: Cross multiply
    105,391.31x = 145,445.33 × 62,395.47
  4. Step 4: Simplify right side
    105,391.31x = 9,075,129,724.66
  5. Step 5: Solve for x
    x = 9,075,129,724.66/105,391.31
  6. Step 6: Final answer
    x = 86,108.90

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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.