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Finding the Fourth Proportional to 90,866.52, 136,316.07 and 30,900.60

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Solution

The fourth proportional to 90,866.52, 136,316.07 and 30,900.60 is: 46,356.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,866.52 : 136,316.07 = 30,900.60 : x
  2. Step 2: Convert to fraction form
    90,866.52/136,316.07 = 30,900.60/x
  3. Step 3: Cross multiply
    90,866.52x = 136,316.07 × 30,900.60
  4. Step 4: Simplify right side
    90,866.52x = 4,212,248,352.64
  5. Step 5: Solve for x
    x = 4,212,248,352.64/90,866.52
  6. Step 6: Final answer
    x = 46,356.44

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1.5x scale

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.