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Finding the Fourth Proportional to 74,866.72, 103,192.98 and 53,070.30

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Solution

The fourth proportional to 74,866.72, 103,192.98 and 53,070.30 is: 73,149.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,866.72 : 103,192.98 = 53,070.30 : x
  2. Step 2: Convert to fraction form
    74,866.72/103,192.98 = 53,070.30/x
  3. Step 3: Cross multiply
    74,866.72x = 103,192.98 × 53,070.30
  4. Step 4: Simplify right side
    74,866.72x = 5,476,482,406.49
  5. Step 5: Solve for x
    x = 5,476,482,406.49/74,866.72
  6. Step 6: Final answer
    x = 73,149.76

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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.