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Finding the Fourth Proportional to 103,484.70, 142,820.72 and 57,548.92

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Solution

The fourth proportional to 103,484.70, 142,820.72 and 57,548.92 is: 79,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,484.70 : 142,820.72 = 57,548.92 : x
  2. Step 2: Convert to fraction form
    103,484.70/142,820.72 = 57,548.92/x
  3. Step 3: Cross multiply
    103,484.70x = 142,820.72 × 57,548.92
  4. Step 4: Simplify right side
    103,484.70x = 8,219,177,901.88
  5. Step 5: Solve for x
    x = 8,219,177,901.88/103,484.70
  6. Step 6: Final answer
    x = 79,424.09

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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.