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Finding the Fourth Proportional to 105,295.80, 145,308.58 and 57,549.17

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Solution

The fourth proportional to 105,295.80, 145,308.58 and 57,549.17 is: 79,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,295.80 : 145,308.58 = 57,549.17 : x
  2. Step 2: Convert to fraction form
    105,295.80/145,308.58 = 57,549.17/x
  3. Step 3: Cross multiply
    105,295.80x = 145,308.58 × 57,549.17
  4. Step 4: Simplify right side
    105,295.80x = 8,362,387,302.46
  5. Step 5: Solve for x
    x = 8,362,387,302.46/105,295.80
  6. Step 6: Final answer
    x = 79,418.05

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1.5x scale

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.