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Finding the Fourth Proportional to 46,785, 64,564.38 and 28,892.28

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Solution

The fourth proportional to 46,785, 64,564.38 and 28,892.28 is: 39,872.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,785 : 64,564.38 = 28,892.28 : x
  2. Step 2: Convert to fraction form
    46,785/64,564.38 = 28,892.28/x
  3. Step 3: Cross multiply
    46,785x = 64,564.38 × 28,892.28
  4. Step 4: Simplify right side
    46,785x = 1,865,412,144.99
  5. Step 5: Solve for x
    x = 1,865,412,144.99/46,785
  6. Step 6: Final answer
    x = 39,872.01

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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.