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Finding the Fourth Proportional to 105,357.76, 145,390.88 and 62,339.48

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Solution

The fourth proportional to 105,357.76, 145,390.88 and 62,339.48 is: 86,026.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,357.76 : 145,390.88 = 62,339.48 : x
  2. Step 2: Convert to fraction form
    105,357.76/145,390.88 = 62,339.48/x
  3. Step 3: Cross multiply
    105,357.76x = 145,390.88 × 62,339.48
  4. Step 4: Simplify right side
    105,357.76x = 9,063,591,855.94
  5. Step 5: Solve for x
    x = 9,063,591,855.94/105,357.76
  6. Step 6: Final answer
    x = 86,026.81

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1.5x scale

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.