Home / 81,686.04-112,706.92-47,675.08

Finding the Fourth Proportional to 81,686.04, 112,706.92 and 47,675.08

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Solution

The fourth proportional to 81,686.04, 112,706.92 and 47,675.08 is: 65,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686.04 : 112,706.92 = 47,675.08 : x
  2. Step 2: Convert to fraction form
    81,686.04/112,706.92 = 47,675.08/x
  3. Step 3: Cross multiply
    81,686.04x = 112,706.92 × 47,675.08
  4. Step 4: Simplify right side
    81,686.04x = 5,373,311,427.55
  5. Step 5: Solve for x
    x = 5,373,311,427.55/81,686.04
  6. Step 6: Final answer
    x = 65,780.05

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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.