Home / 105,461.46-145,536.48-57,715.20

Finding the Fourth Proportional to 105,461.46, 145,536.48 and 57,715.20

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Solution

The fourth proportional to 105,461.46, 145,536.48 and 57,715.20 is: 79,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,461.46 : 145,536.48 = 57,715.20 : x
  2. Step 2: Convert to fraction form
    105,461.46/145,536.48 = 57,715.20/x
  3. Step 3: Cross multiply
    105,461.46x = 145,536.48 × 57,715.20
  4. Step 4: Simplify right side
    105,461.46x = 8,399,667,050.50
  5. Step 5: Solve for x
    x = 8,399,667,050.50/105,461.46
  6. Step 6: Final answer
    x = 79,646.79

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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.