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Finding the Fourth Proportional to 105,483.77, 145,567.77 and 57,740.15

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Solution

The fourth proportional to 105,483.77, 145,567.77 and 57,740.15 is: 79,681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,483.77 : 145,567.77 = 57,740.15 : x
  2. Step 2: Convert to fraction form
    105,483.77/145,567.77 = 57,740.15/x
  3. Step 3: Cross multiply
    105,483.77x = 145,567.77 × 57,740.15
  4. Step 4: Simplify right side
    105,483.77x = 8,405,104,147.13
  5. Step 5: Solve for x
    x = 8,405,104,147.13/105,483.77
  6. Step 6: Final answer
    x = 79,681.50

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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.