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Finding the Fourth Proportional to 64,985.76, 97,442.19 and 20,604.24

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Solution

The fourth proportional to 64,985.76, 97,442.19 and 20,604.24 is: 30,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,985.76 : 97,442.19 = 20,604.24 : x
  2. Step 2: Convert to fraction form
    64,985.76/97,442.19 = 20,604.24/x
  3. Step 3: Cross multiply
    64,985.76x = 97,442.19 × 20,604.24
  4. Step 4: Simplify right side
    64,985.76x = 2,007,722,268.89
  5. Step 5: Solve for x
    x = 2,007,722,268.89/64,985.76
  6. Step 6: Final answer
    x = 30,894.80

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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.