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Finding the Fourth Proportional to 78,069, 117,113.58 and 35,938.92

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Solution

The fourth proportional to 78,069, 117,113.58 and 35,938.92 is: 53,913.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,069 : 117,113.58 = 35,938.92 : x
  2. Step 2: Convert to fraction form
    78,069/117,113.58 = 35,938.92/x
  3. Step 3: Cross multiply
    78,069x = 117,113.58 × 35,938.92
  4. Step 4: Simplify right side
    78,069x = 4,208,935,582.53
  5. Step 5: Solve for x
    x = 4,208,935,582.53/78,069
  6. Step 6: Final answer
    x = 53,913.02

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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.