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Finding the Fourth Proportional to 81,574,372, 112,358,190 and 62,699,860

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Solution

The fourth proportional to 81,574,372, 112,358,190 and 62,699,860 is: 86,360,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,574,372 : 112,358,190 = 62,699,860 : x
  2. Step 2: Convert to fraction form
    81,574,372/112,358,190 = 62,699,860/x
  3. Step 3: Cross multiply
    81,574,372x = 112,358,190 × 62,699,860
  4. Step 4: Simplify right side
    81,574,372x = 7,044,842,782,853,400
  5. Step 5: Solve for x
    x = 7,044,842,782,853,400/81,574,372
  6. Step 6: Final answer
    x = 86,360,980.91

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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.