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Finding the Fourth Proportional to 68,710,237.80, 103,065,356.70 and 65,351,005.80

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Solution

The fourth proportional to 68,710,237.80, 103,065,356.70 and 65,351,005.80 is: 98,026,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710,237.80 : 103,065,356.70 = 65,351,005.80 : x
  2. Step 2: Convert to fraction form
    68,710,237.80/103,065,356.70 = 65,351,005.80/x
  3. Step 3: Cross multiply
    68,710,237.80x = 103,065,356.70 × 65,351,005.80
  4. Step 4: Simplify right side
    68,710,237.80x = 6,735,424,723,480,769
  5. Step 5: Solve for x
    x = 6,735,424,723,480,769/68,710,237.80
  6. Step 6: Final answer
    x = 98,026,508.70

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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.