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Finding the Fourth Proportional to 72,893,971.50, 100,595,780.19 and 40,301,023.02

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Solution

The fourth proportional to 72,893,971.50, 100,595,780.19 and 40,301,023.02 is: 55,616,572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,893,971.50 : 100,595,780.19 = 40,301,023.02 : x
  2. Step 2: Convert to fraction form
    72,893,971.50/100,595,780.19 = 40,301,023.02/x
  3. Step 3: Cross multiply
    72,893,971.50x = 100,595,780.19 × 40,301,023.02
  4. Step 4: Simplify right side
    72,893,971.50x = 4,054,112,853,152,050
  5. Step 5: Solve for x
    x = 4,054,112,853,152,050/72,893,971.50
  6. Step 6: Final answer
    x = 55,616,572.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.