Home / 78,620,133.60-117,930,200.40-40,356,381.60

Finding the Fourth Proportional to 78,620,133.60, 117,930,200.40 and 40,356,381.60

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Solution

The fourth proportional to 78,620,133.60, 117,930,200.40 and 40,356,381.60 is: 60,534,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,620,133.60 : 117,930,200.40 = 40,356,381.60 : x
  2. Step 2: Convert to fraction form
    78,620,133.60/117,930,200.40 = 40,356,381.60/x
  3. Step 3: Cross multiply
    78,620,133.60x = 117,930,200.40 × 40,356,381.60
  4. Step 4: Simplify right side
    78,620,133.60x = 4,759,236,169,506,873
  5. Step 5: Solve for x
    x = 4,759,236,169,506,873/78,620,133.60
  6. Step 6: Final answer
    x = 60,534,572.40

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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.