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Finding the Fourth Proportional to 105,769.53, 145,941.13 and 62,740.91

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Solution

The fourth proportional to 105,769.53, 145,941.13 and 62,740.91 is: 86,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,769.53 : 145,941.13 = 62,740.91 : x
  2. Step 2: Convert to fraction form
    105,769.53/145,941.13 = 62,740.91/x
  3. Step 3: Cross multiply
    105,769.53x = 145,941.13 × 62,740.91
  4. Step 4: Simplify right side
    105,769.53x = 9,156,478,259.22
  5. Step 5: Solve for x
    x = 9,156,478,259.22/105,769.53
  6. Step 6: Final answer
    x = 86,570.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.