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Finding the Fourth Proportional to 74,657, 103,031.52 and 49,511.36

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Solution

The fourth proportional to 74,657, 103,031.52 and 49,511.36 is: 68,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657 : 103,031.52 = 49,511.36 : x
  2. Step 2: Convert to fraction form
    74,657/103,031.52 = 49,511.36/x
  3. Step 3: Cross multiply
    74,657x = 103,031.52 × 49,511.36
  4. Step 4: Simplify right side
    74,657x = 5,101,230,678.07
  5. Step 5: Solve for x
    x = 5,101,230,678.07/74,657
  6. Step 6: Final answer
    x = 68,328.90

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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.