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Finding the Fourth Proportional to 67,484.63, 93,128.79 and 39,192.14

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Solution

The fourth proportional to 67,484.63, 93,128.79 and 39,192.14 is: 54,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,484.63 : 93,128.79 = 39,192.14 : x
  2. Step 2: Convert to fraction form
    67,484.63/93,128.79 = 39,192.14/x
  3. Step 3: Cross multiply
    67,484.63x = 93,128.79 × 39,192.14
  4. Step 4: Simplify right side
    67,484.63x = 3,649,916,110.07
  5. Step 5: Solve for x
    x = 3,649,916,110.07/67,484.63
  6. Step 6: Final answer
    x = 54,085.15

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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.