Home / 105,724.50-145,886.40-57,965.28

Finding the Fourth Proportional to 105,724.50, 145,886.40 and 57,965.28

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Solution

The fourth proportional to 105,724.50, 145,886.40 and 57,965.28 is: 79,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,724.50 : 145,886.40 = 57,965.28 : x
  2. Step 2: Convert to fraction form
    105,724.50/145,886.40 = 57,965.28/x
  3. Step 3: Cross multiply
    105,724.50x = 145,886.40 × 57,965.28
  4. Step 4: Simplify right side
    105,724.50x = 8,456,346,024.19
  5. Step 5: Solve for x
    x = 8,456,346,024.19/105,724.50
  6. Step 6: Final answer
    x = 79,984.73

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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.