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Finding the Fourth Proportional to 85,484.96, 128,264.35 and 46,034.21

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Solution

The fourth proportional to 85,484.96, 128,264.35 and 46,034.21 is: 69,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,484.96 : 128,264.35 = 46,034.21 : x
  2. Step 2: Convert to fraction form
    85,484.96/128,264.35 = 46,034.21/x
  3. Step 3: Cross multiply
    85,484.96x = 128,264.35 × 46,034.21
  4. Step 4: Simplify right side
    85,484.96x = 5,904,548,228.99
  5. Step 5: Solve for x
    x = 5,904,548,228.99/85,484.96
  6. Step 6: Final answer
    x = 69,071.19

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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.