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Finding the Fourth Proportional to 71,598.99, 98,804.54 and 39,765.83

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Solution

The fourth proportional to 71,598.99, 98,804.54 and 39,765.83 is: 54,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.99 : 98,804.54 = 39,765.83 : x
  2. Step 2: Convert to fraction form
    71,598.99/98,804.54 = 39,765.83/x
  3. Step 3: Cross multiply
    71,598.99x = 98,804.54 × 39,765.83
  4. Step 4: Simplify right side
    71,598.99x = 3,929,043,848.02
  5. Step 5: Solve for x
    x = 3,929,043,848.02/71,598.99
  6. Step 6: Final answer
    x = 54,875.69

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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.