Home / 105,323.47-145,348.68-57,576.79

Finding the Fourth Proportional to 105,323.47, 145,348.68 and 57,576.79

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Solution

The fourth proportional to 105,323.47, 145,348.68 and 57,576.79 is: 79,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,323.47 : 145,348.68 = 57,576.79 : x
  2. Step 2: Convert to fraction form
    105,323.47/145,348.68 = 57,576.79/x
  3. Step 3: Cross multiply
    105,323.47x = 145,348.68 × 57,576.79
  4. Step 4: Simplify right side
    105,323.47x = 8,368,710,425.14
  5. Step 5: Solve for x
    x = 8,368,710,425.14/105,323.47
  6. Step 6: Final answer
    x = 79,457.22

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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.