Home / 105,526.79-145,627.02-57,780.12

Finding the Fourth Proportional to 105,526.79, 145,627.02 and 57,780.12

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Solution

The fourth proportional to 105,526.79, 145,627.02 and 57,780.12 is: 79,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,526.79 : 145,627.02 = 57,780.12 : x
  2. Step 2: Convert to fraction form
    105,526.79/145,627.02 = 57,780.12/x
  3. Step 3: Cross multiply
    105,526.79x = 145,627.02 × 57,780.12
  4. Step 4: Simplify right side
    105,526.79x = 8,414,346,690.84
  5. Step 5: Solve for x
    x = 8,414,346,690.84/105,526.79
  6. Step 6: Final answer
    x = 79,736.60

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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.