Home / 90,345.68-124,688.76-54,555.92

Finding the Fourth Proportional to 90,345.68, 124,688.76 and 54,555.92

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Solution

The fourth proportional to 90,345.68, 124,688.76 and 54,555.92 is: 75,294.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,345.68 : 124,688.76 = 54,555.92 : x
  2. Step 2: Convert to fraction form
    90,345.68/124,688.76 = 54,555.92/x
  3. Step 3: Cross multiply
    90,345.68x = 124,688.76 × 54,555.92
  4. Step 4: Simplify right side
    90,345.68x = 6,802,510,015.46
  5. Step 5: Solve for x
    x = 6,802,510,015.46/90,345.68
  6. Step 6: Final answer
    x = 75,294.25

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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.