Home / 105,400.48-145,449.56-57,652.80

Finding the Fourth Proportional to 105,400.48, 145,449.56 and 57,652.80

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Solution

The fourth proportional to 105,400.48, 145,449.56 and 57,652.80 is: 79,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,400.48 : 145,449.56 = 57,652.80 : x
  2. Step 2: Convert to fraction form
    105,400.48/145,449.56 = 57,652.80/x
  3. Step 3: Cross multiply
    105,400.48x = 145,449.56 × 57,652.80
  4. Step 4: Simplify right side
    105,400.48x = 8,385,574,392.77
  5. Step 5: Solve for x
    x = 8,385,574,392.77/105,400.48
  6. Step 6: Final answer
    x = 79,559.17

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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.