Home / 72,727.84-100,365.78-42,515.74

Finding the Fourth Proportional to 72,727.84, 100,365.78 and 42,515.74

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Solution

The fourth proportional to 72,727.84, 100,365.78 and 42,515.74 is: 58,672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,727.84 : 100,365.78 = 42,515.74 : x
  2. Step 2: Convert to fraction form
    72,727.84/100,365.78 = 42,515.74/x
  3. Step 3: Cross multiply
    72,727.84x = 100,365.78 × 42,515.74
  4. Step 4: Simplify right side
    72,727.84x = 4,267,125,407.38
  5. Step 5: Solve for x
    x = 4,267,125,407.38/72,727.84
  6. Step 6: Final answer
    x = 58,672.52

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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.