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Finding the Fourth Proportional to 61,356.70, 92,035.90 and 40,430.70

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Solution

The fourth proportional to 61,356.70, 92,035.90 and 40,430.70 is: 60,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,356.70 : 92,035.90 = 40,430.70 : x
  2. Step 2: Convert to fraction form
    61,356.70/92,035.90 = 40,430.70/x
  3. Step 3: Cross multiply
    61,356.70x = 92,035.90 × 40,430.70
  4. Step 4: Simplify right side
    61,356.70x = 3,721,075,862.13
  5. Step 5: Solve for x
    x = 3,721,075,862.13/61,356.70
  6. Step 6: Final answer
    x = 60,646.61

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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.