Home / 81,209.52-112,070.70-45,402.12

Finding the Fourth Proportional to 81,209.52, 112,070.70 and 45,402.12

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Solution

The fourth proportional to 81,209.52, 112,070.70 and 45,402.12 is: 62,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,209.52 : 112,070.70 = 45,402.12 : x
  2. Step 2: Convert to fraction form
    81,209.52/112,070.70 = 45,402.12/x
  3. Step 3: Cross multiply
    81,209.52x = 112,070.70 × 45,402.12
  4. Step 4: Simplify right side
    81,209.52x = 5,088,247,369.88
  5. Step 5: Solve for x
    x = 5,088,247,369.88/81,209.52
  6. Step 6: Final answer
    x = 62,655.80

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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.