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Finding the Fourth Proportional to 61,272,693.80, 91,814,562.30 and 53,147,551.40

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Solution

The fourth proportional to 61,272,693.80, 91,814,562.30 and 53,147,551.40 is: 79,639,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,272,693.80 : 91,814,562.30 = 53,147,551.40 : x
  2. Step 2: Convert to fraction form
    61,272,693.80/91,814,562.30 = 53,147,551.40/x
  3. Step 3: Cross multiply
    61,272,693.80x = 91,814,562.30 × 53,147,551.40
  4. Step 4: Simplify right side
    61,272,693.80x = 4,879,719,169,107,752
  5. Step 5: Solve for x
    x = 4,879,719,169,107,752/61,272,693.80
  6. Step 6: Final answer
    x = 79,639,377.13

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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.