Home / 72,657,721.60-109,138,214.40-61,320,313.60

Finding the Fourth Proportional to 72,657,721.60, 109,138,214.40 and 61,320,313.60

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Solution

The fourth proportional to 72,657,721.60, 109,138,214.40 and 61,320,313.60 is: 92,108,441.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657,721.60 : 109,138,214.40 = 61,320,313.60 : x
  2. Step 2: Convert to fraction form
    72,657,721.60/109,138,214.40 = 61,320,313.60/x
  3. Step 3: Cross multiply
    72,657,721.60x = 109,138,214.40 × 61,320,313.60
  4. Step 4: Simplify right side
    72,657,721.60x = 6,692,389,532,752,036
  5. Step 5: Solve for x
    x = 6,692,389,532,752,036/72,657,721.60
  6. Step 6: Final answer
    x = 92,108,441.96

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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.