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Finding the Fourth Proportional to 90,055.68, 124,314.80 and 60,990.46

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Solution

The fourth proportional to 90,055.68, 124,314.80 and 60,990.46 is: 84,192.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,055.68 : 124,314.80 = 60,990.46 : x
  2. Step 2: Convert to fraction form
    90,055.68/124,314.80 = 60,990.46/x
  3. Step 3: Cross multiply
    90,055.68x = 124,314.80 × 60,990.46
  4. Step 4: Simplify right side
    90,055.68x = 7,582,016,836.81
  5. Step 5: Solve for x
    x = 7,582,016,836.81/90,055.68
  6. Step 6: Final answer
    x = 84,192.54

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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.