Home / 105,528.60-145,629.48-57,784.88

Finding the Fourth Proportional to 105,528.60, 145,629.48 and 57,784.88

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Solution

The fourth proportional to 105,528.60, 145,629.48 and 57,784.88 is: 79,743.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,528.60 : 145,629.48 = 57,784.88 : x
  2. Step 2: Convert to fraction form
    105,528.60/145,629.48 = 57,784.88/x
  3. Step 3: Cross multiply
    105,528.60x = 145,629.48 × 57,784.88
  4. Step 4: Simplify right side
    105,528.60x = 8,415,182,026.26
  5. Step 5: Solve for x
    x = 8,415,182,026.26/105,528.60
  6. Step 6: Final answer
    x = 79,743.14

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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.