Home / 81,312.13-112,205.30-45,011.11

Finding the Fourth Proportional to 81,312.13, 112,205.30 and 45,011.11

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Solution

The fourth proportional to 81,312.13, 112,205.30 and 45,011.11 is: 62,112.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,312.13 : 112,205.30 = 45,011.11 : x
  2. Step 2: Convert to fraction form
    81,312.13/112,205.30 = 45,011.11/x
  3. Step 3: Cross multiply
    81,312.13x = 112,205.30 × 45,011.11
  4. Step 4: Simplify right side
    81,312.13x = 5,050,484,314.80
  5. Step 5: Solve for x
    x = 5,050,484,314.80/81,312.13
  6. Step 6: Final answer
    x = 62,112.31

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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.