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Finding the Fourth Proportional to 51,996,978.07, 71,754,952.77 and 28,791,606.80

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Solution

The fourth proportional to 51,996,978.07, 71,754,952.77 and 28,791,606.80 is: 39,731,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,996,978.07 : 71,754,952.77 = 28,791,606.80 : x
  2. Step 2: Convert to fraction form
    51,996,978.07/71,754,952.77 = 28,791,606.80/x
  3. Step 3: Cross multiply
    51,996,978.07x = 71,754,952.77 × 28,791,606.80
  4. Step 4: Simplify right side
    51,996,978.07x = 2,065,940,386,285,798
  5. Step 5: Solve for x
    x = 2,065,940,386,285,798/51,996,978.07
  6. Step 6: Final answer
    x = 39,731,931.80

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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.