Home / 105,308.13-145,325.14-57,561.46

Finding the Fourth Proportional to 105,308.13, 145,325.14 and 57,561.46

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Solution

The fourth proportional to 105,308.13, 145,325.14 and 57,561.46 is: 79,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,308.13 : 145,325.14 = 57,561.46 : x
  2. Step 2: Convert to fraction form
    105,308.13/145,325.14 = 57,561.46/x
  3. Step 3: Cross multiply
    105,308.13x = 145,325.14 × 57,561.46
  4. Step 4: Simplify right side
    105,308.13x = 8,365,127,233.10
  5. Step 5: Solve for x
    x = 8,365,127,233.10/105,308.13
  6. Step 6: Final answer
    x = 79,434.77

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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.