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Finding the Fourth Proportional to 101,980.35, 152,970.65 and 31,860.03

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Solution

The fourth proportional to 101,980.35, 152,970.65 and 31,860.03 is: 47,790.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,980.35 : 152,970.65 = 31,860.03 : x
  2. Step 2: Convert to fraction form
    101,980.35/152,970.65 = 31,860.03/x
  3. Step 3: Cross multiply
    101,980.35x = 152,970.65 × 31,860.03
  4. Step 4: Simplify right side
    101,980.35x = 4,873,649,338.82
  5. Step 5: Solve for x
    x = 4,873,649,338.82/101,980.35
  6. Step 6: Final answer
    x = 47,790.08

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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.