Home / 105,532.48-145,638.12-57,790.36

Finding the Fourth Proportional to 105,532.48, 145,638.12 and 57,790.36

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Solution

The fourth proportional to 105,532.48, 145,638.12 and 57,790.36 is: 79,752.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,532.48 : 145,638.12 = 57,790.36 : x
  2. Step 2: Convert to fraction form
    105,532.48/145,638.12 = 57,790.36/x
  3. Step 3: Cross multiply
    105,532.48x = 145,638.12 × 57,790.36
  4. Step 4: Simplify right side
    105,532.48x = 8,416,479,384.52
  5. Step 5: Solve for x
    x = 8,416,479,384.52/105,532.48
  6. Step 6: Final answer
    x = 79,752.50

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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.