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Finding the Fourth Proportional to 45,783.99, 68,752.18 and 30,886.99

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Solution

The fourth proportional to 45,783.99, 68,752.18 and 30,886.99 is: 46,381.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,783.99 : 68,752.18 = 30,886.99 : x
  2. Step 2: Convert to fraction form
    45,783.99/68,752.18 = 30,886.99/x
  3. Step 3: Cross multiply
    45,783.99x = 68,752.18 × 30,886.99
  4. Step 4: Simplify right side
    45,783.99x = 2,123,547,552.38
  5. Step 5: Solve for x
    x = 2,123,547,552.38/45,783.99
  6. Step 6: Final answer
    x = 46,381.89

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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.