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Finding the Fourth Proportional to 60,990.51, 91,485.77 and 25,905.63

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Solution

The fourth proportional to 60,990.51, 91,485.77 and 25,905.63 is: 38,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,990.51 : 91,485.77 = 25,905.63 : x
  2. Step 2: Convert to fraction form
    60,990.51/91,485.77 = 25,905.63/x
  3. Step 3: Cross multiply
    60,990.51x = 91,485.77 × 25,905.63
  4. Step 4: Simplify right side
    60,990.51x = 2,369,996,378.36
  5. Step 5: Solve for x
    x = 2,369,996,378.36/60,990.51
  6. Step 6: Final answer
    x = 38,858.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.