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Finding the Fourth Proportional to 74,887,627.60, 112,331,441.40 and 65,631,077.20

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Solution

The fourth proportional to 74,887,627.60, 112,331,441.40 and 65,631,077.20 is: 98,446,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887,627.60 : 112,331,441.40 = 65,631,077.20 : x
  2. Step 2: Convert to fraction form
    74,887,627.60/112,331,441.40 = 65,631,077.20/x
  3. Step 3: Cross multiply
    74,887,627.60x = 112,331,441.40 × 65,631,077.20
  4. Step 4: Simplify right side
    74,887,627.60x = 7,372,433,502,510,677
  5. Step 5: Solve for x
    x = 7,372,433,502,510,677/74,887,627.60
  6. Step 6: Final answer
    x = 98,446,615.80

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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.